Question

An alloy consist of 30% copper and 40% zinc and the remaining nickel.find the amount of nickel in 20kilograms of alloy

Answer 1

% of copper = 30%, % of zinc = 40%, % of nickel = ( 100 - 30 + 40) = 30% Let the required quantity of nickel be x kg. ACQ, 30% of 20kg. = 30/100 *20000g = 6kg.