Question

The ratio of weights of tin and zinc in an alloy is 2:5 . How much zinc is there in 31.5 gm of alloy ?​

Answer 1

Solution

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Weight of Tin   =2x

Weight of Zinc =5x

Total weight of Alloy -

Weight of Tin+Weight of Zinc=31.5g

2x+5x=31.5g

         7x=31.5g

            x=4.5g

Hence,

Weight of Tin   =2x=2×4.5=9g

Weight of Zinc =5x=5×4.5=22.5g