100+ Percentage Questions and Answers for SSC Exam - 1

Question: 1

One eighth of a number is 415. What will 69% of that number be?

(A) 219.12

(B) 225.76

(C) 229.08

(D) 232.4

Ans: C

Let the number be x.

Then, $${1}/{8}$$x = 41.5 ⇒ x = 41.5 × 8 = 332.

∴ 69% of 332 = $$({69} / {100} × 332)$$ = 229.08.

Question: 2

If the price of a commodity is decreased by 20% and its consumption is increased by 20%, what will be the increase or decrease in the expenditure on the commodity?

(A) 4% increase

(B) 4% decrease

(C) 8% increase

(D) 8% decrease

Ans: B

Let original consumption = 100 units and
original price = Rs. 100 per unit.

Original expenditure = Rs. (100 × 100) = Rs. 10000.

New expenditure = Rs. (120 × 80) = Rs. 9600.

∴ Decrease in expenditure = $$({400}/{10000} × 100)%$$ = 4%.

Question: 3

The price of sugar increases by 32%. A family reduces its consumption so that the expenditure of the sugar is up only by 10%. If the total consumption of the sugar before the price rise was 10 kg per month, then the consumption of sugar per month at present (in kg) is

(A) 8

(B) $$8{1}/{2}$$kg

(C) $$8{1}/{3}$$kg

(D) 9

Ans: C

Let the original price of sugar be Rs. 10 per kg.

Then, original expenditure = Rs. (10 × 10) = Rs. 100.

New expenditure = 110% of 100 = Rs. 110.

New price of sugar = 132% of 10 = Rs. 13.20.

New consumption = $$({110} / {13.20})$$ kg = $${25}/{3}$$ kg = $$8{1}/{3}$$kg.

Question: 4

In an examination, 35% candidates failed in one subject and 42% failed in another subject while 15% failed in both the subjects. If 2500 candidates appeared at the examination, how many passed in either subject but not in both?

(A) 1175

(B) 2125

(C) 3125

(D) 3175

Ans: A

Failed in 1st subject = $$({35}/{100} × 2500)$$ = 875.

Failed in 2nd subject = $$({42}/{100} × 2500)$$ = 1050.

Failed in both = $$({15}/{100} × 2500)$$ = 375.

Failed in 1st subject only = (875 - 375) = 500.

Failed in 2nd subject only = (1050 - 375) = 675.

∴ Passed in 2nd only + Passed in 1st only = (675 + 500) = 1175.

Question: 5

What is 28% of 36% of $${5}/{7}$$th of 5000?

(A) 350

(B) 360

(C) 420

(D) 480

Ans: B

Given expression = $$({28} / {100} × {36} / {100} × {5} / {7} × 5000)$$ = 360.

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