For the next two (02) items that follow:
X is an alloy of copper and zinc. Y is an alloy containing 80% of copper, 4% of zinc and 16% of tin. A fused mass of X and Y is found to contain 74% of copper, 16% of zinc and 10% of tin.
What is the percentage of zinc in X?
A.40%
B.36%✓ Correct
C.34%
D.30%
Explanation
X contains only copper and zinc. From the previous question, copper in X = 64%, so zinc in X = 100 - 64 = 36%.
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