Question

A painter uses 1.2 liters of the paint to cover 1m2 of the wall. How many square meters he can cover with 12 liters of paint?

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Answer 1

10 square meters can be covered with 12 liters of paint.

Explanation:

The area painted in 1.2 l of paint = 1 sq meters

Now, by UNITARY METHOD

So, the area painted in 1 L of paint =
`((1)/(1.2)) m^(2)`

or, the total area painted in 12 L of paint =
`((1)/(1.2)  * 12) m^(2)`

= 10 square meters

Hence, 10 square meters can be covered with 12 liters of paint.