Here's the reaction formula
CuSO4 + Zn == ZnSO4 + Cu we are told ALL the copper sulphate gives up it's copper .
All we need do is find how much copper is in 200 g of copper sulphate ...we need Atomic mass of the elements
copper = 63.55 sulphur = 32.06 oxygen = 16.00 we have four O , so that's 64
63.55+ 32.06 + 64 = 159. 61
From this we see every 159.1g of copper sulphate will yield 63.55 g of copper .
I'll let you finish off.
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