A 20% reduction in the price of sugar enables a man to buy 2 kg more for Rs. 60. The original price per kg is: MCQ with Answer and Explanation

A 20% reduction in the price of sugar enables a man to buy 2 kg more for Rs. 60. The original price per kg is:

A. Rs. 7.5

B. Rs. 5

C. Rs. 6

D. Rs. 8

Answer: Option A

Let original price x. 60/x + 2 = 60/(0.8x). Multiply: 60+2x = 75 → 2x=15 → x=7.5.

This question belongs to: Maths Percentage

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Question #1 Report Error

The population of a town increases by 10% annually. If the current population is 12,100, what was the population two years ago?

A. 9,000

B. 11,000

C. 10,000

D. 12,000

Correct Answer: Option C

Explanation:
Let the population two years ago be P. P * (110 / 100) * (110 / 100) = 12100. P * 1.21 = 12100 implies P = 10000.

This question belongs to: Maths Percentage

Question #2 Report Error

By what percent is 80 less than 100?

A. 10%

B. 15%

C. 20%

D. 25%

Correct Answer: Option C

Explanation:
Difference = 20, % = (20/100)×100 = 20%.

This question belongs to: Maths Percentage

Question #3 Report Error

A train 200 m long passes a platform 300 m long in 25 seconds. Find the speed of the train in kmph.

A. 54 kmph

B. 66 kmph

C. 72 kmph

D. 60 kmph

Correct Answer: Option C

Explanation:
Total distance = 200+300=500 m, time 25 sec, speed = 500/25 = 20 m/s = 20 × 18/5 = 72 kmph.

This question belongs to: Maths Percentage