A kind of concrete is made up of cement, sand and stone in the ratio of 2:3:5. Now, how many cement, sand and stone are needed to make 2 tons of this kind of concrete

A kind of concrete is made up of cement, sand and stone in the ratio of 2:3:5. Now, how many cement, sand and stone are needed to make 2 tons of this kind of concrete

It's a practical problem again
2+3+5=10
The weight ratio of cement is 2 / 10
The weight ratio of sand is 3 / 10
The weight ratio of stones is 5 / 10
so
The weight of cement is 2 * (2 / 10) = 0.4 tons
The weight of sand is 2 * (3 / 10) = 0.6 tons
The weight of the stone is 2 * (/ 10) = 1 ton