A is thrice as good a workman as B, and takes 10 days less to do a piece of work than B takes. How many days will B take to complete, if he works alone?

Vikash Gupta • 24.35K Points
Instructor III Math

Q. A is thrice as good a workman as B, and takes 10 days less to do a piece of work than B takes. How many days will B take to complete, if he works alone?

(A) 21

(B) 15

(D) 25

Correct Answer - Option(B)

Explanation by: RAMAVATH KRISHNA

1:3 3-1= 2

2= 3×10 2= 30  B can 30÷ 2 = 15 days

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