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Elle can type a manuscript in 3hrs. while Mimi can type the same manuscript in 5hrs. How long will it take to type the manuscript if they work together?


Sagot :

IT WILL TAKE 8 HOURS IF THEY WORKED TOGETHER

given:

rate of Elle =1/3
rate of Elle =1/5

req'd:
t=?

formula is:

work = rate x time

work done = 1 work so

1 = 1/3t + 1/5t

t = 1.875 hrs