Question

It takes 180 ml of fertiliser to treat 36 m² of lawn.
How much fertiliser is needed to treat a lawn of area 40 m²?​

Answer 1

Answer:

200 ml of fertilizer

Step-by-step explanation:

Create a proportion where x is the amount of fertilizer needed for an area of 40 m²

$\frac{180}{36}$ = $\frac{x}{40}$

Cross multiply and solve for x:

36x = 7200

x = 200

So, 200 ml of fertilizer is needed