Respuesta :

Answer:

1.2 hours or 1 hour 12 minutes

Step-by-step explanation:

We can use ratios to solve

1 hour        x hours

------------ = ------------

15 trees      18 trees    

Using cross products

1*18 = 15x

Divide by 15

18/15 = x

1.2 hours

1.2 * 60 minutes = 72 minutes

1 hour 12 minutes

Answer:

it took him 1 hour and 12 minutes

Step-by-step explanation:

well you divide 60 (cuz an hour is 60 minutes) by 15 and u get 4

then u multiply 4 by 3 and u get 12

then u add 1 hour and 12 minutes

hope this helped :)