In the concrete the ratio of the mass of saint Simon and Stone is 3.2.5 What Fraction of the concrete Cement

1 answer

Let the mass of Saint Simon be 3x and the mass of Stone be 5x.

Since the ratio of their masses is 3:5, the total mass of the concrete is 3x + 5x = 8x

Let the mass of cement be y. Since cement is a component of concrete, we have the following equation:

y = 3/8 * (3x) = 9x/8

Therefore, the fraction of the concrete that is cement is 9x/8 / 8x = 9/64.