1.

Two alloys contain tin and iron in the ratio of 1 : 2 and 2 : 3. If the two alloys are mixed in the proportion of 3 : 4 respectively (by weight), the ratio of tin and iron in the newly formed alloy is :

A. 10 : 21
B. 13 : 22
C. 14 : 25
D. 12 : 23
Answer» C. 14 : 25


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