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All questions of Profit & Loss for Grade 10 Exam

A sells a car to B at 10% loss. If B sells it for Rs. 54000 and gains 20%, the cost price of the car for A was
a)Rs. 25000
b)Rs. 50000
c)Rs. 37500
d)Rs. 60000
Correct answer is option 'B'. Can you explain this answer?

Gaurav Datta answered
Selling price of the car = Rs.54,000
gain 20%
Friend's cost price of the car = Rs. 54000 x 100/120 = Rs.45,000
Now selling price of the car of the first owner Rs.45000
Loss 10%
Cost price of the car = 45000 x 100/90
= Rs.50,000

John buys an old scooter for Rs. 4700 and spends Rs. 800 on its repairs. If he sells the scooter for Rs. 5800, what is his gain percent ?
  • a)
    12%
  • b)
    10%
  • c)
    4 + 4 / 7%
  • d)
    5 + 5 / 11%
Correct answer is option 'D'. Can you explain this answer?

Whenever we get this type of question, we should have formula in mind that,
Gain% = (gain/cost) x 100

Cost = 4700 + 800 = Rs. 5500
S.P. = Rs. 5800

Profit = 5800 - 5500 = 300

A man sells a TV set for Rs. 33000 and makes a profit of 10%. He sells another TV at a loss of 20%. If on the whole, he neither gains nor loses, find the selling price of the second TV set.
  • a)
    Rs.15,000 
  • b)
    Rs.30,000
  • c)
    Rs.12,000
  • d)
    Rs.27,000
Correct answer is option 'C'. Can you explain this answer?

Aarav Sharma answered
Given:
Selling price of first TV set = Rs. 33000
Profit earned on first TV set = 10%

To find: Selling price of the second TV set

Let's assume the cost price of the first TV set = x
Profit earned on the first TV set = 10%
Therefore, selling price of the first TV set = x + 0.1x = 1.1x
Selling price of the first TV set = Rs. 33000
So, 1.1x = 33000
x = 30000

Cost price of the second TV set = y
Loss incurred on the second TV set = 20%
Therefore, selling price of the second TV set = y - 0.2y = 0.8y

Now, let's assume that the man sells the second TV set at a selling price of z.
Total selling price of both the TV sets = 33000 + z
Total cost price of both the TV sets = 30000 + y

It is given that the man neither gains nor loses on the whole, i.e., total selling price = total cost price
33000 + z = 30000 + y + 0.8y
33000 + z = 38000 + 0.8y
z = 38000 - 0.8y

Substituting the value of z in the above equation, we get:
33000 + 38000 - 0.8y = 30000 + y
71000 - 0.8y = 30000 + y
71000 = 1.8y
y = 71000/1.8
y = 39444.44

Selling price of the second TV set = 0.8y = 0.8 x 39444.44 = Rs. 31555.56

Therefore, option (c) Rs. 27,000 is incorrect and the correct answer is option (a) Rs. 15,000.

E sold at table to R at a profit of 25%.R sold the same table to S for Rs. 90 thereby making a profit of 20%. Find the price at which E bought the table from Z if it is known that Z gained 25% in the transaction.
  • a)
    Rs.80 
  • b)
    Rs.75 
  • c)
    Rs.90 
  • d)
    Rs.60
Correct answer is option 'D'. Can you explain this answer?

R sold the table at 20% profit at Rs. 90. Thus cost price would be given by: CPR X 1.2 = 90
R’s Cost price = Rs. 75.
We also know that E sold it to R at 25% profit. Thus,
E’s Cost price X 1.25 = 75
-> E’s cost price = 60. 

A man sold an article at a profit of 10%. If he had charged Rs 45 more his profit percentage would have been 25%. What is the cost price?
  • a)
    Rs 200
  • b)
    Rs 300
  • c)
    Rs 250
  • d)
    None of these
Correct answer is option 'B'. Can you explain this answer?

Profit%= 10%
SP= CP+ (10/100)*CP = 11CP/10.
Now if he had sold it for RS.45 more, profit% given is 25%.
SP+45= CP + (25/100)*CP
SP + 45= 5CP/4
Substitute SP = 11 CP/10 in the above equation.
You get CP = RS. 300

On selling 17 balls at Rs. 720, there is a loss equal to the cost price of 5 balls. What is the cost price of a ball?
  • a)
    Rs. 43
  • b)
    Rs. 60
  • c)
    Rs. 55
  • d)
    Rs. 34
Correct answer is option 'B'. Can you explain this answer?

Alok Verma answered
Let the cost price of a ball be Rs. x.
So, the CP of 17 balls is Rs. 17x.
The CP of 5 balls is Rs. 5x.
 
Since Loss = CP - SP
So, 5x = 17x - 720
On solving, we get
12 x = 720
that is, x = 60
So, the cost price of a ball is Rs. 60.

Murali purchased 20 dozens of toys at the rate of Rs. 375 per dozen. He sold each one of them at the rate of Rs. 33. Find out his profit percentage.
  • a)
    3.5
  • b)
    5.6
  • c)
    4.1
  • d)
    3.4
Correct answer is 'B'. Can you explain this answer?

The cost price of 20 dozens of toys = 375*20 i.e per dozen 375= Rs 7500/-the selling price of one dozen toys = 12*33= Rs 396/-the selling price of 20 dozen toys = 396*20= Rs 7920/-gain=sp-cp = 7920-7500 =Rs.420/-gain%=(gain/cp)*100 = 420/7500*100 =5.6%

An article is bought for Rs 600 and sold for Rs 750. What is the profit percentage?
  • a)
    20%
  • b)
    25%
  • c)
    30%
  • d)
    None of these
Correct answer is option 'B'. Can you explain this answer?

Arya Roy answered
Total Profit = 750 - 600 = 150 rs

Percentage of Profit = 150/600 = 25%

Hence he makes 25% profit on his investment/ principal amount.

A man sells an article at 10% above its cost price. If he had bought it at 15% less than what he paid for it and sold it for Rs. 33 less, he would have gained 10%. Find the cost price of the article.
  • a)
    Rs.400 
  • b)
    Rs.200
  • c)
    Rs.325
  • d)
    Rs.260
Correct answer is option 'B'. Can you explain this answer?

Surbhi Joshi answered
Given:
Selling price = Cost price + 10% of cost price
Let the cost price be x
Selling price = 1.1x

To find:
Cost price of the article

Solution:
Let the original selling price be y
The cost price of the article if he had bought it at 15% less than what he paid for it = 0.85y
He sold it for Rs. 33 less, so the selling price = y - 33
He gained 10%
Selling price = Cost price + 10% of cost price
1.1x = 1.1(0.85y) + 0.1(0.85y)
1.1x = 0.935y + 0.085y
1.1x = 1.02y
y = 1.078x

Substituting the value of y in the equation y - 33 = 1.1(0.85y)
1.078x - 33 = 0.935y
1.078x - 33 = 0.935(1.078x)
1.078x - 33 = 1.00883x
0.06917x = 33
x = 33/0.06917
x = Rs. 476.86

Therefore, the cost price of the article is Rs. 476.86
But, the options given are not in decimals
So, the closest option to Rs. 476.86 is Rs. 200

Hence, the correct option is (B) Rs. 200.

The cost price of 20 articles is the same as the selling price of x articles. If the profit is 25%, find out the value of x
  • a)
    15
  • b)
    25
  • c)
    18
  • d)
    16
Correct answer is 'D'. Can you explain this answer?

Sameer Rane answered
Let C.P. of each article be Re. 1 C.P. of x articles = Rs. x.S.P. of x articles = Rs. 20.Profit = Rs. (20 - x).because [(20 - x)/x] x 100 = 25=> 2000 - 100x = 25x=> 125x = 2000 x = 16.

The owner of Book Point does not get either profit or loss by selling 15 books for Rs 225. How many books should he sell for the same amount to gain 25% profit?
  • a)
    10
  • b)
    11
  • c)
    12
  • d)
    13
Correct answer is option 'C'. Can you explain this answer?

Aarav Sharma answered
Given:
Selling price of 15 books = Rs 225
No profit or loss

To Find:
Number of books to be sold to gain 25% profit

Solution:
Let the cost price of each book be x.
Total cost price of 15 books = 15x

Given, Selling price of 15 books = Rs 225
Therefore, selling price of each book = 225/15 = 15

Since there is no profit or loss,
Total cost price = Total selling price
15x * 15 = 225
x = 225/225
x = 1

So, the cost price of each book is Rs 1.

To gain 25% profit, the selling price should be 1.25 times the cost price.
Selling price of each book = 1.25

Let the number of books to be sold for the same amount be n.
Total selling price of n books = 15 (since selling price of 15 books is Rs 225)

Therefore, 1.25n = 225
n = 180/1.25
n = 144

Therefore, the owner should sell 12 books for the same amount to gain a 25% profit. Answer: (C)

When an item is sold for Rs. 18,700, the owner loses 15%. At what price should that plot be sold to get a gain of 15%?

  • a)
    Rs. 25100
  • b)
    Rs. 24200
  • c)
    Rs. 25300
  • d)
    Rs. 21200
Correct answer is option 'C'. Can you explain this answer?

Avi Shah answered
First we find CP.

If SP is Rs. 85 then CP = Rs 100

If SP is Rs. 18,700, then

CP = = Rs 22,000

Now, if CP is Rs 100, then SP = Rs. 115

Thus, if CP is Rs. 22,000, then

SP = =Rs 25,300

Murali purchased 20 dozens of toys at the rate of Rs. 375 per dozen. He sold each one of them at the rate of Rs. 33. Find out his profit percentage.
  • a)
    3.5
  • b)
    5.6
  • c)
    4.1
  • d)
    3.4
Correct answer is option 'B'. Can you explain this answer?

Arya Roy answered
Cost Price of 1 toy = Rs.375/12 = Rs. 31.25

Selling Price of 1 toy = Rs. 33

So, Gain = Rs. (33 - 31.25) = Rs. 1.75

Profit % = [(1.75/31.25) x 100 ]% = 28/5 % = 5.6%

The cost price of 20 articles is the same as the selling price of x articles. If the profit is 25%, find out the value of x
  • a)
    15
  • b)
    25
  • c)
    18
  • d)
    16
Correct answer is option 'D'. Can you explain this answer?

Dhruv Mehra answered
Let the Cost Price of one article = Rs. 1
CP of x articles = Rs. x 
CP of 20 articles = 20
Selling price of x articles = 20
Profit = 25% [Given]
⇒ (SP - CP) / CP = 25 / 100 = 1/4 ⇒ (20-x) / x = 1/4
⇒ 80−4x=x
⇒ 5x=80
⇒ x = 80/5 = 16

By selling an article for Rs 360, the loss incurred is 10%. At what minimum price should he sell that article to avoid loss?
  • a)
    Rs 320
  • b)
    Rs 324
  • c)
    Rs 396
  • d)
    Rs 400
Correct answer is option 'D'. Can you explain this answer?

  1. Given:
    • Selling Price (S.P.) = Rs 360
    • Loss Percentage = 10%
  2. To find the Cost Price (C.P.): The loss incurred is 10%, meaning the selling price is 90% of the cost price.
    S.P.=0.90×C.P     
    360=0.90×C.P
  3. Solving for C.P.:
    C.P.=360/0.90=400
  4. To avoid a loss, the article must be sold at its cost price, which is Rs 400.
Answer: d) Rs 400.

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