Working alone at its constant rate, Reed assembles 'C' computers in 10 hours. Working alone at its constant rate, Erin assembles 'C' computer 15 hours. How many minutes does it take Reed and Erin , working together at their respective constant rates, to assemble 'C' computers ?
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Reed does in 10hrs
Erin does in 15hrs
Therefore according to the formula for finding combined time,
we get
1/10+1/15=1/6
so , the time taken will be 1/6 / 1
i.e 6
therefore time taken by both is 6hrs
Erin does in 15hrs
Therefore according to the formula for finding combined time,
we get
1/10+1/15=1/6
so , the time taken will be 1/6 / 1
i.e 6
therefore time taken by both is 6hrs
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