Question

The walls in a room are being painted. If 4 cans cover 480 sq ft then how many cans cover 840 sq ft?

Answer 1

ANSWER:

Let the no is cans be x.

On using inverse proportionality,

• 480/4 = 840/x
• 120 = 840/x
• x = 840/120
• x = 7.

Hence, 7 cans cover 840sq ft.

Answer 2

Answer:

7 cans

Step-by-step explanation:

You will first have to divide 480 by 4

The anwser is 480 ÷ 4 = 120

Then you will have to 840 ÷ 120 = 7

The answer is 7 cans