Question

A gardening company plants 10 trees in 2 hours how long will it take to plant 150 trees

Answer 1

If you use ratios then it would be 10:2 so now the ratio will change to 150:?. Divide 10 from150 and you get 15. So 15 times 2 equals to 30. So the answer is 30 hours.

Answer 2

10 trees / 2 hours = 5 trees per hour

150 trees / 5 per hour = 30 hours