Question

An alloy consists of 30%copper and 40% zinc, and the remaining is nickel . Find the amount of nickel in 30 kg of the alloy
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Answer 1

Answer:

30×30/100

900/100

9kg

Answer 2

Answer:

Given:

Out of 100%, 30% is copper, 40% is zinc.

∴ Nickel is 30%.

Amt of nickel required in 30kg of alloy=

30% of 30kg

= 30 x 30 /100

= 3 x 3

= 9 kg

Thus,

The amount of zinc required in 30kg of alloy is

${\huge{\boxed{\boxed{\pink{9\:kg}}}}}$

Hope this helps you.