Question

Jenny uses 2 bags of potting soil for 6 potted plants.



At this rate, how many bags of potting soil does Jenny use for 15 potted plants?

Answer 1

1 bag potting soil for three plant

2 bag potted soil for 6 plant

3 bag pottted soil for 6+3=9

4bag potted soil for 9+3=12

5bagpotted soil for 12+3=15

Answer 2

Let x be the require number
Then 2:6 = x:15

6x = 15*2
X=5

So answer is 5 bags