Two alloys have copper 60% and 35%. Mixed to get 50% copper. Ratio of mixing: MCQ with Answer and Explanation

Two alloys have copper 60% and 35%. Mixed to get 50% copper. Ratio of mixing:

A. 3:2

B. 3:5

C. 2:3

D. 5:3

Answer: Option A

Using alligation: (60-50):(50-35) = 10:15 = 2:3, but the first alloy gives 10% excess, second gives 15% deficit, so ratio 15:10 = 3:2.

This question belongs to: Maths Percentage

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Question #1 Report Error

Due to a 20% reduction in the price of sugar, a man is able to buy 6 kg more for Rs. 120. What is the reduced price per kg?

A. Rs. 6

B. Rs. 3

C. Rs. 5

D. Rs. 4

Correct Answer: Option D

Explanation:
Original x, xy=120. 0.8x(y+6)=120 → 96 + 4.8x = 120 → 4.8x = 24 → x=5, reduced = 0.8×5 = 4.

This question belongs to: Maths Percentage

Question #2 Report Error

In an election, 75% cast votes. Winner got 52% of cast votes, won by 600. Total voters:

A. 20000

B. 15000

C. 18000

D. 24000

Correct Answer: Option A

Explanation:
Cast votes C, margin 4%C = 600 → C=15000. Total T, 0.75T=15000 → T=20000.

This question belongs to: Maths Percentage

Question #3 Report Error

35% of 240 is:

A. 90

B. 78

C. 84

D. 72

Correct Answer: Option C

Explanation:
0.35 × 240 = 84.

This question belongs to: Maths Percentage