An alloy is to contain copper and zinc in the ratio 5:3. The zinc required to be melted with 40kg of copper is? Choose the correct choice from the following options
A) 15kg B) 20kg C) 8kg D) 24kg E) 32kg
Let the required quantity of copper be x kg   5:3::40:x   5x = 40*3   x = 24kg   Answer is 24kg
<result>D</result>
An alloy is to contain copper and zinc in the ratio 5:3. The zinc required to be melted with 40kg of copper is?