Question

An alloy contains 40% Cooper, 32% nicle and rest zinc. find the mass of zinc in one kg of alloy .​

Answer 1

Answer:

copper =40% of 1 kg

=40/100 x 1000gram

=400gram

Nickel = 32% of 1 kg

= 32/100 x1000

=320 gram

Copper +Nickel+zinc =1000gram

400 +320+ zinc =1000

zinc = 1000-(400+320)

=1000- 720

=280 gram

Ans is 280 gram

Answer 2

Step-by-step explanation:

weight of copper= 40%

=(40/100)*1000

=400g.

weight of nickel=32%

=(32/100)*1000

=320 g.

weight of zinc= 1 kg -(weight of copper+ weight of nickel)

=1000g- (400+320) g

=(1000-720) g

= 280 g.

So, the weight of zinc is 280 g.