Question

An alley

consists of 30% zinc 45% nickel and the rest copper . find the weight of copper in 800g of the alloy


​

Answer 1

Answer:

200g

Step-by-step explanation:

the percentage of copper = 100%-30%-45%

                                            = 25%

The weight of the whole alloy is 800g , this means 100% = 800g as the alloy is the mixture of all the elements combined.

so since 100%= 800g and copper is 25% of the alloy

we need to find 25% of 800g

therefore we do (25/100) * 800g = 200g

I hope this helps :)