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All questions of Profit, Loss & Discount for UGC NET 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. 

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%

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?

Rahul Mehta answered
S.P. at 5% profit = Rs.(110y/100)
= 11y/10
New C.P. of article = 85y/100
= 17/20
S.P. = Rs.(17y/20 * 110/100)
New C.P. of article = Rs. 187/200
According to Question 
11y/10 - 187/200 = 33
33y/200 = 33
y = 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.

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

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