Question

Rakesh can do a piece of work in 12 days and the same work can be done by Mohan in 20 days then how many days will Rakesh and Mohan together take to finish the same work​

Answer 1

Answer:

Rakesh can do piece of work in =12 day

and Mohan to take 20 days

according to the question

20-12=8

Answer 2

Answer:

7.5 days

Step-by-step explanation:

for rakesh we have work rate as 1/12

for mohan we have work rate as 1/20

∴ now total required days would be

∴ $\frac{1}{12} + \frac{1}{20} = \frac{1}{x}$

∴ Now we take lcm and we have equation as

∴ $\frac{5+3}{60} = \frac{1}{x}$

∴ x = $\frac{60}{8}$

∴ x = $\frac{15}{2}$

∴ x = 7.5 days

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