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17 votes
17 votes
David can paint 3 rooms in 7 hours. At the same pace how long would it take him to paint 8 rooms?

User Nesiseka
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1 Answer

17 votes
17 votes

Answer

It will take David 18.67 hours or 18 hours, 40 minutes to paint 8 rooms.

Step-by-step explanation

We are asked to calculate the number of hours it'll take David to paint 8 rooms.

Let the number of hours David will take to paint 8 rooms be x

David can paint 3 rooms in 7 hours.

3 rooms = 7 hours

8 rooms = x hours

We can form a mathematical relationship by cross multiplying

3 × x = 8 × 7

3x = 56

Divide both sides 3

(3x/3) = (56/3)

x = 18.67 hours = 18 hours, 40 mins

Hope this Helps!!!

User Ang Lee
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