Question

An alloy consist of 30 percentage of copper , 40 percentage of zinc and remaning are nickle . Find the amount of nickle in 20 kilograms of the alloy

Answer 1

percentage of nickel=100-(30+40)
=30%
amount of nickel=30% of 20000grams
$= \frac{30}{100 } \times 20000grams$
=30X200grams
=6000grams
=6kg