Question

Raja can do 1/4 of a job in 4 days and Mohan can do 1/5 of the job in 4 days. If both work together.
how long will they take to complete the entire job?
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Answer 1

Answer:

9/20

Step-by-step explanation:

1/5+1/4

5 and 4 LCM is 20

So, We will divide 20 by 5 is 4

Divide also 20 by 4 is 5

hence, 5+4/20=9/20

Answer is 9/20

Answer 2

Answer:

Answer:

9/20

Step-by-step explanation:

1/5+1/4

5 and 4 LCM is 20

So, We will divide 20 by 5 is 4

Divide also 20 by 4 is 5

hence, 5+4/20=9/20

Answer is 9/20