Question 1

30% of 80/? = 24

Accepted Answer

Let 30% of 80/y =24 ⇒ 24y = (30 x 80)/100 ∴ y = (30 x 80)/ (24 x 100) =1

Question 2

8% of 96 =? of 1/25

Accepted Answer

Let 8% of 96 = y of 1/25 ⇒ (8 x 96)/100 = y/25 ∴ y = (8 x 96 x 25)/100 = 192

Question 3

If A is 90% of B, then what percent of A is B?

Accepted Answer

∵ A = 90% of B ⇒ A = (90 x B)/100 Let C% of A = B Then, (C x A)/100 = B ⇒ [C x {(90 x B)/100}] / 100 = B ∴ C = (100 x 100) / 90 =111.1

Question 4

(A% of B + B% of A) is equal to?

Accepted Answer

A% of B + B% of A =AB/100 + AB/100 = 2AB/100 = 2% of AB

Question 5

If 31% of a number is 46.5,the number is?

Accepted Answer

Let 31% of A = 46.5 ⇒ (31 x A)/100 = 46.5 ∴ A = (46.5 x 100) / 31 = 150

Question 6

Which number is 60% less than 80?

Accepted Answer

Required number = 80 - 60% of 80 = 80 - (60 x 80)/100 = 32

Question 7

If 90% of A = 30% of B and B = C% of A,then the value of C is?

Accepted Answer

∵ 90A/100 = 30B/100 = (30/100) x AC/100 ∴ C = 100 x (100/30) x (90/100) = 300

Question 8

Which is greatest 33 1/ 3%, 4/15 and 0.35?

Accepted Answer

331/3% = (100/3) /100 = 1/3 =0.33; 4/15 = 0.26 Clearly 0.35>0.33>0.26 ∴ 0.35 is greatest

Question 9

45 x? = 25% of 900

Accepted Answer

Let 45 x A = (25 x 900)/100 ∴ A = (25 x 9)/45 = 5

Question 10

If 0.5% of A =85 paise, then the value of A is?

Accepted Answer

∵ 0.5/100 of A = 85/100 ∴ A = Rs. (85 / 0.5) = Rs. 170

Question 11

What percent is 3% of 5%?

Accepted Answer

Required percent = [(3/100) / (5/100)] x 100]% = [(3/100) x (100/5) x 100] % = 60%

Question 12

75% of 480 = (?) x 15?

Accepted Answer

Let 75% of 480 = A x 15. ⇒ (75 x 480)/100 = 15A ∴ A = (75 x 480)/ (100 x 15) = 24

Question 13

30 quintals is what percent of 2 metric tonnes?

Accepted Answer

Required percent = {30/(2 x 10)} x 100 % = 150%

Question 14

A number exceeds 20% of itself by 40. The number is?

Accepted Answer

∵ A - 20% of A = 40 ⇒ A - A/5 = 40 ⇒ 4A/5 =40 ∴ A = (5 x 40)/4 = 50.

Question 15

x% of y is y% of?

Accepted Answer

Let x% of y = y% of A, then ⇒ xy / 100 = yA/100 ∴ A = (xy/100) x (100/y) = x

Question 16

12.5% of 192 = 50% of?

Accepted Answer

Let 12.5% of 192 = 50% of A, ⇒(12.5 x 192) / 100 = (50 x A) / 100 ∴ A = (12.5 x 192) / 50 = 48

Question 17

If 37 1/ 2% of a number is 900,then 62 1/ 2% of the number is?

Accepted Answer

Let 371/2% of A = 900 ⇒ {(75/2) x A} x 100 = 900 ∴ A = (900 x 2 x 100) / 75 = 2400 So, 621/2% of A = (125/2) x (1/100) x 2400 =1500

Question 18

Subtracting 6% of A from A is equivalent to multiplying A by how much?

Accepted Answer

Let A - 6% of A = AB. ⇒ (94 x A) / 100 = AB ∴ B = 0.94

Question 19

By how much is 30% of 80 greater than 4/5 th of 25?

Accepted Answer

It is (30 x 80)/100 - (4 x 25)/ 5 = 24 - 20 = 4

Question 20

The price of an article is cut by 10%. To restore it to the former value. The new price must be increased by?

Accepted Answer

Let original price = Rs. 100. Then, new price = Rs. 90. ∴ Increased on Rs. 90 = Rs. 10 Required increase % = (10 x 100) / 90 % = 111/9%

Percentage Questions