Question

In a certain concrete mixture, the ratio of
cement to sand is 1:5. How many bags
of cement would be used with 200 bags
of sand?​

Answer 1

Answer:

40 bags

Step-by-step explanation:

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

sand=200,

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

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

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

therefore, 40 bags of cement are needed