An alloy of copper and zinc contains 45% copper and the rest is zinc. Find the weight of zinc in 20 kg of the alloy.
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so 45% of 20=9kg copper
so 20-9=11kg zinc
alternative method
so let the weight be 100%
so zinc =100%-45%=55%
so zinc=55%of 20=11kg
please mark it brainliest
so 20-9=11kg zinc
alternative method
so let the weight be 100%
so zinc =100%-45%=55%
so zinc=55%of 20=11kg
please mark it brainliest
heerasameer13:
can you tell the way you are doing it
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