Question

in a certain concret mixture the ratio of cement to Sand is one has 5 how many bags of cement would be used with 200 bags of sand​

Answer 1

one bag of cement=5 bags of sand.

therefore, the ratio of

$\frac{cement}{sand} = \frac{1}{5}$

so, if in case (ii)

$\frac{cement}{sand} = \frac{x}{y} \: \: \: and \: y = 200$

then,

$\frac{cement}{sand} = \frac{x}{200}$

comparing both the equation,

$\frac{1}{5} = \frac{x}{200}$

$5x = 200 \\ x = \frac{200}{5} \\ x = 40$

therefore, we will need 40 bags of cement