Question

An alloy ‘M’ contains lead and iron in the ratio 4:3, and alloy ‘N’ contains iron and copper in the ratio 2:5. If 35 grams of ‘M’ and 42 grams of ‘N’ are combined, determine the final ratio of lead, iron and copper respectively.

A 5:15:16
B 20:27:30
C 19:12:21
D 16:15:6
E None of these
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