vaibhav1221 wrote:

Answer should be 35. Please check your answer choices.

Regards,

V

I agree

vaibhav1221So, this is how I went about this problem:

If there is 10 kg of the first alloy and the ratio is 4:1, there is 8 kg of copper for 2 kg of zinc

Similarly, for 16 kg of the second alloy and ratio of 1:3, there is 4 kg of copper for 12 kg of zinc

We need a new alloy in which the ratio of copper to zinc is 3:2(3x:2x)

Since we can add pure copper to this mixture and get the new alloy with the 3:2 ratio,

8+4+x/2+12 = 3/2 -> 42 = 2(12+x) -> x = 9

When we add 9 kg of pure copper, the resulting weight of the new alloy will be 10+16+9 = 35kg

GoonerForever - Please check your answer options. We must have 35 kg as an option!

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