Question

Henry is mixing concrete. To make concrete he needs to mix cement, sand and gravel in the ratio 5 : 4 : 1 by weight. Henry needs to make 110kg of concrete. He has 50kg of cement, 55kg of sand and 15kg of gravel. Which ingredient is Henry short of?

Answer 1

Answer:

he is short of cement.

Step-by-step explanation:

total ratio is 10x

so 10x= 110

that means x= 11.

so the cement needed is 5x= 5*11= 55kg

sand needed is 4x= 4*11=44 kg

and gravel needed is 1x=1*x= 11kg.

so only cement required is 55 and Henry has only 50. so he is short of 5kg cement.