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1 vote
Jimmy spent 1 hour planting 15 trees. How long would it take to plant 18 such trees?

User Littleimp
by
7.7k points

2 Answers

4 votes

Answer:

it took him 1 hour and 12 minutes

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 :)

User Stephen Newell
by
8.0k points
3 votes

Answer:

1.2 hours or 1 hour 12 minutes

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

User Jakov
by
8.3k points

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