Question

an allow consists of 30% zinc, 45%nickel and the rest copper.find the mass of copperin 400g of alloy

Answer 1

Answer:

100 g

Step-by-step explanation:

in the alloy

zinc =30%

nickel=45%

copper=100% - (30% + 45% )

copper= 100%-75%

copper=25%

mass of copper in 400g of alloy =

0.25 × 400 = 100

ans. =100 g