Question

Henry is mixing concrete.
To make concrete he needs to mix cement, sand and gravel in the ratio 1 : 4 : 7 by weight.
Henry needs to make 180kg of concrete.
He has 16kg of cement, 60.5kg of sand and 100kg of gravel.
Which ingredient is Henry short of?

Answer 1

henry is sort of sand

Answer 2

Answer:

he doesn't have enough gravel