Percentages Quiz Set 018

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Question 1

Mr. X who spends 85% of his salary is able to save Rs. 255. What is his salary?

 A

Rs. 1700.

 B

Rs. 1800.

 C

Rs. 1600.

 D

Rs. 1900.

Soln.
Ans: a

Let the salary be x. His saving% is 100 - 85 = 15, so 15% of x = 255, which gives x = $255/15$ × 100 = Rs. 1700.

Solution | Discuss! | Chapters»

Question 2

If 50% of X is Y, then Y% of 50 is?

 A

25 % of X.

 B

35 % of X.

 C

15 % of X.

 D

45 % of X.

Soln.
Ans: a

We have Y = $(50 × X)/100$, so Y% of 50 is same as $(50 × X)/100$% × 50, which can be rearranged to $(50 × 50)/100$% × X = 25% of X.

Solution | Discuss! | Chapters»

Question 3

If 70% of X is Y, then Y% of 70 is?

 A

49 % of X.

 B

59 % of X.

 C

39 % of X.

 D

69 % of X.

Soln.
Ans: a

We have Y = $(70 × X)/100$, so Y% of 70 is same as $(70 × X)/100$% × 70, which can be rearranged to $(70 × 70)/100$% × X = 49% of X.

Solution | Discuss! | Chapters»

Question 4

If 80% of X is Y, then Y% of 80 is?

 A

64 % of X.

 B

74 % of X.

 C

54 % of X.

 D

84 % of X.

Soln.
Ans: a

We have Y = $(80 × X)/100$, so Y% of 80 is same as $(80 × X)/100$% × 80, which can be rearranged to $(80 × 80)/100$% × X = 64% of X.

Solution | Discuss! | Chapters»

Question 5

The service tax is 5%. A person receives a telephone bill amounting to Rs. 840. How much was the bill excluding tax?

 A

Rs. 800.

 B

Rs. 810.

 C

Rs. 790.

 D

Rs. 820.

Soln.
Ans: a

Let the calls be for Rs. x. The total bill is x + 5% of x = ${21x}/20 = 840$, which gives x = Rs. 800.

Solution | Discuss! | Chapters»
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Updated on 2020-02-07. Published on: 2016-05-12

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