SOLUTION: a small air conditioner will cool a room 2 degrees in 15 min. a larger air conditioner will cool the room 2 degrees in 10 min. how long would it take to cool the room 2 degrees wit

Question 847757: a small air conditioner will cool a room 2 degrees in 15 min. a larger air conditioner will cool the room 2 degrees in 10 min. how long would it take to cool the room 2 degrees with both air conditioners running?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
a small air conditioner will cool a room 2 degrees in 15 min.
a larger air conditioner will cool the room 2 degrees in 10 min.
how long would it take to cool the room 2 degrees with both air conditioners running?
:
let t = time required for both a/c units to lower the tem;
let the completed job = 1; lowering the temp 2 degrees
:
A shared work equation
+ = 1
mulitply by 30 to clear the denominators, results
2t + 3t = 30
5t = 30
t = 30/5
t = 6 min when both work together
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