A is thrice as good a workman as B and therefore is able to finish a job in 70 days less than B. working together, they can do it in  Choose the correct choice from the following options:
A) days	B) ½ days	C) days	D) days	E) 1/4 days
Explanation:   B = 3A   3A – A =70 days   A = 35days   Then, B = 90 days   (A + B) = 35 × 90/ 120 = 26 1/4 days .   Answer: Option 1/4 days
<result>E</result>
A is thrice as good a workman as B and therefore is able to finish a job in 70 days less than B. working together, they can do it in