A is thrice as good as B. A is able to finish a job in 60 days less than B.Theycan finish the work in how many days if they work together.	Choices: A) 21 days B) 21 ½ days C) 22 days D) 22 ½ days E) 23 ½ days
If A completes a work in 1 day, B completes the same work in 3 days   Hence, if the difference is 2 days, B can complete the work in 3 days   =&gt; if the difference is 60 days, B can complete the work in 90 days   =&gt; Amount of work B can do in 1 day= 1/90   Amount of work A can do in 1 day = 3 × (1/90) = 1/30   Amount of work A and B can together do in 1 day = 1/90 + 1/30 = 4/90 = 2/45   =&gt; A and B together can do the work in 45/2 days = 22 ½ days   22 ½ days
<result>D</result>
A is thrice as good as B. A is able to finish a job in 60 days less than B.Theycan finish the work in how many days if they work together.