SOLUTION: Question 1: It takes 3 people and 4 hours to paint a room. How long will it take for 2 people to paint the same room? Question 2: Seven men can build a garage in 54 hours. How

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Question 982194: Question 1:
It takes 3 people and 4 hours to paint a room. How long will it take for 2 people to paint the same room?
Question 2:
Seven men can build a garage in 54 hours. How quickly can the same garage be built by nine men?
Question 3:
14.68% interest per annum on the home loan. How much is the interest for the home loan of $289, 675 at the end of the year?
Answer by josgarithmetic(39613) About Me  (Show Source):
You can put this solution on YOUR website!
Questions 1 and 2 are uniform work rates situations.
If n workers each work at rate r, then their rate as a group is nr.
If R is rate for n workers, then T and J for time and quantity of work are related as nR%2AT=J.

Q1:
system%283r%2A4=1%2C2r%2At=1%29;
variable's meanings are implied...

Q2:
system%287r%2A54=1%2C9r%2At=1%29
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Do you find that questions Q1 and Q2 are the same form, but just different examples?