Answers

2015-04-20T12:50:44+05:30
My solution

cookie - C
Tin -T

C+T = 3-->(1)
1/4C+T= 1.2 --(2)

(1) - (2)

3/4 C = 1.8

1/4 C = 1.8/3 = 0.6

Therefore T = 1.2 - 0.6 = 0.6 

Weight of tin = 0.6 // 

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