1.

Two types of alloy possess gold and silver in the ratio of 7 : 22 and 21 :37. In what ratio should these alloys be mixed so as to have a new alloy in which gold and silver would exist in the ratio 25 : 62 ?

A. 13 : 8
B. 8 :13
C. 13 :12
D. 6 : 9
Answer» B. 8 :13


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