Question

EM
If A can complete a piece of work in 6 days and B can do the same work in 12 days then by working together they can complete in how many days.
d) 6 days
a) 3 days
b) 2 days
c) 4 days​

Answer 1

Answer:

hey guys

here is your answer

step by step ✍️✍️

Step-by-step explanation:

Given A requires 6 days and B requires 12 days.

Assume that work done is LCM(6,12) = 12 Units

Hence A’s rate = 12/6 = 2 units/day and B’s = 12/12 = 1 unit/day.

When they work together their rate is (2+1)= 3 units/days.

Total days to complete this 12 Units = 12(U)/3(u/d) = 4 days…

SO in 4 days A does 4days*2Units/days = 8Unit and B does 4(d)*1(u/d) = 4.

hence work done by A is 8/12=2/3 and work done by B is 4/12 = 1/3.