# A can do a work in 12 days. B is 20% more efficient than A. How many d

| A can do a work in 12 days. B is 20% more efficient than A. How many days will A and B together take to do the same job?

A.

B.

C.

D.

### Right Answer is: B

#### SOLUTION

A’s 1 day work =

B’s 1 day work =

(A + B)’s I day work =

⇒ (A+B) completed the work in days.

**Shortcut:** A : B

Efficiency 100 : 120

5 : 6

Time taken 6 : 5

Time taken by B to complete the work in 2×5 = 10 days

Both can complete the work in days.

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A can do a work in 12 days. B is 20% more efficient than A. How many d