Test: Comparing Quantities- 2 - Class 8 MCQ

5:10

covert 10km to meter

1km=1000m

10km= 10000m

so,

5:10000= 5/10000

= 1/2000 =1:2000

 Given, marked price = 840

 selling price = 714

 We know that Discount = MP - SP

            = 840 - 714

            = 126.

  Discount% = 126/840 * 100

            = 15%.

Total Cost = 700+50 = 750
Profit = 5% of 750 = 37.5
SP = CP+P = 750+37.5 = 787.5

20 : 30   or 20/30

= 2 : 3   or 2/3

50 : 40   or 50/40 

= 5 : 4  or 5/4

120 : 90   or 120/90 

= 4 : 3   or 4/3 

Original price = 3,40,000

20% increase = 20/100 * 3,40000

= 68000

New price = 3,40,000 + 68000

= 4,08,000

As it was 60,000 initially, but now there is an increase of 15%.
so we calculate 15% of 60,000 that will be ₹9,000.
Then we have to calculate the new price of bike, (i.e. old + increased) = ₹60,000+₹9,000 = ₹69,000

As it was 5,00,000 initially, but now there is an increase of 10%.
so we calculate 10% of 5,00,000 that will be ₹50,000.
Then we have to calculate the new price of bike, (i.e. old + increased) = ₹5,00,000+₹50,000 = ₹5,50,000

Cost price of washing machine = 20,000 + 5,00

= 20,500 Rs. 

Selling price = Rs. 30,000

Gain = S.P. - C.P. = 30,000 - 20,500

9,500 Rs. 

Therefore, Gain percent = (Gain * 100)/ C.P. 

= (9,500 * 100)/ 20,500

= 46.34% 

Cost price of washing machine = 40,000 + 5,000

= 45,000 Rs. 

Selling price = Rs. 50,000

Gain = S.P. - C.P. = 50,000 - 45,000

5,000 Rs. 

Therefore, Gain percent = (Gain * 100)/ C.P. 

= (5,000 * 100)/ 45,000

= 11.11% 

Let the total no. of students be x.
No. of girls= 20
No. of boys = x-20
A. T. Q. ,
40% of x= 20
=> 40/100 × x = 20
=> x= 20× 100/40
=> x= 50
So, total no. of students = 50
No. of girls= 20
No. of boys = 50-20 = 30

Ratio of girls to boys = 20:30
= 20/30
=2/3
=2:3 

Girls are 60% of the total number of students and are 18 in number.

Let say total students = T

Girls = (60/100)T

=> 18 = 3T/5

=> T = 30

Boys = 30 - 18  = 12

Ratio of Girls to boys = 18 : 12

=> 3 : 2

Shopkeeper purchased 300 bulbs for ₹3000
If 10 bulbs were fused, the cost of 10 bulbs is ₹100
If he sell 290 bulbs as ₹12 each = 290×12 =3480
when he sell the the cost of each bulb as ₹12 he got ₹480 profit
As a percentage = 480÷3000×100=16
so he got 16% profit

Number of pieces = 500

Cost per piece = 20

Therefore, total cost price = 500 * 20 = 10000

Number of spoiled pieces = 50

Then, number of pieces sold = 500 - 50 = 450

Selling price of each piece = 25

Therefore, total selling price = 450 * 25 = 11250

Since SP>CP, therefore it's a gain.

Gain % = [(SP - CP)/CP] * 100

= [(11250 - 10000)/10000] * 100

= (1250/10000) * 100

= 12.5 %

Discount on Jeans=20% of 1450=290
Price of jeans=1450-290=1160
Discount on shirt=20% of 850=170
Price of shirt=850-170=680
Total price=1160+680= 1840

Given: MP (marked price) of 1 pair of jeans=₹1450

MP of 1 shirt= ₹850

Total Marked Price (MP) of a pair of jeans and two shirts

= 1450 + 2 x 850 = 3150

Total MP= ₹3150

Discount = Marked Price (MP) x % Discount

=3150 × (10/100)= ₹315

New Price After Discount = 3150 - 315 =₹ 2835

A customer would have to pay for a pair of jeans and two shirts =₹2835

Population of the city in 2011 = 30,000

Percentage increased = 5%

Therefore 5% of 30,000 = 5/100 × 30,000 = 1,500

Population increased in 2 years = 1,500 × 2 = 3,000

Therefore population in 2013 = 30,000 + 3,000 = 33,000

Population of the city in 1999 = 40,000 Percentage increased = 10% Therefore 10% of 40,000 = 10/100 × 40,000 = 4,000 Population of the city in 2000 = 40,000 + 4,000 = 44,000