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All members of our painting team paint at the same rate. If 20 members can paint a 1600 square foot wall in 30 minutes, then how long would it take for 15 members to paint a 1800 square foot wall, in minutes?

 

I need help with this exercise in proportion.

 Aug 2, 2023
 #1
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1600/20 = 80 square feet per person

 

Now since they all do it at the same time then "

 

8/3 sq feet per minute therefore 

 

15 x 8/3 = 40 ft per minute 

 

1800 / 40 = 45 minutes 

 

for proportion problems always break down the answer into per __ unit , (small as possible) smiley

 Aug 2, 2023

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