Concrete is made of cement, sand and stone by mixing 2:3:5, the existing cement 6 tons, how many tons of sand and stone each

Concrete is made of cement, sand and stone by mixing 2:3:5, the existing cement 6 tons, how many tons of sand and stone each

2 / (2 + 3 + 5) = 1 / 5 6 / 1 / 5 = 30 * 3 / (2 + 3 + 5) = 9t 30 * 5 / (2 + 3 + 5) = 15t do you understand?

A kind of concrete is composed of cement, sand and stone. It is known that the ratio of cement to sand is 2:5, and the ratio of stone to sand is 3:4. Then 8.2 tons of this kind of concrete is prepared
How many tons of cement, sand and stone are needed

The ratio of cement to sand is 2:5 = 6:15
The ratio of stone to sand is 3:4 = 15:20
Cement: stone to sand ratio = 6:15:20 (6 + 15 + 20) = 41
Cement = 8.2 * 6 / 41 = 1.2
Stone = 8.2 * 15 / 41 = 3
Sand = 8.2 * 20 / 41 = 4

The ratio of cement, sand and stone is 3:2:4. If x tons of cement are transported, then the tons of sand are (x ^ (3 ^) 2) and the tons of stone are (x ^ (3 ^)

Sand: 3x divided by 2
Stone: 3x divided by 4