A is thrice as good as B in work. A is able to finish a job in 60 days less than B. They can finish the work in - days if they work together.
Pick
A) 5 6/2 B) 3/15 C) 8/7 D) 22 1/2 E) 1/9
Explanation :   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   ANSWER:22 1/2
<result>D</result>
A is thrice as good as B in work. A is able to finish a job in 60 days less than B. They can finish the work in - days if they work together.