SOLUTION: a and b can each pack 120 crates in 24 hours and 30 hours respectively. how long will they take to pack 240 crates working together ???
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Question 877060: a and b can each pack 120 crates in 24 hours and 30 hours respectively. how long will they take to pack 240 crates working together ???
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
for 120 crates
1/24+1/30=1/x
x = 40/3=13.34 hours together
for 240 crates
x = 80/3=26.67 hours together
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