Math, asked by rkbunnyas05, 19 days ago

A can do a bit of work in 5 days, which B alone can do in 20 days. How long both cooperating can do it?

Answers

Answered by ishaanp
1

Answer:

4 days

Step-by-step explanation:

LCM APPROACH

A =  5days  

B =  20days  

LCM(5,20)=20  

This is the total work i.e =  20  units

So A per day work =20/5=4 units  

B per day work  =20/20=1 units  

Per day work when A and B together works =  (4+1)units=5units  

So A and B together take  20/5 days to complete the entire work.

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