A team P of 20 engineers can complete work or task in 32 days. Another team Q of 16 engineers can complete same task in 30 days.Then the ratio of working capacity of 1 member of P to the 1 member of Q is
a. 3 : 2
Choose the correct choice from the following:
A) 22 B) 34 C) 77 D) 29 E) 21
Explanation:   Let the capacity of an engineer in P = x units, and in Q = y units.   Working capacity of P = x × 32 × 20   Working capacity of Q = y × 16 × 30   As the total work is same, we equate the above equations.   ⇒ x × 32 × 20 = y × 16 × 30   ⇒ xy=16×3032×20=34   Answer: 34
<result>B</result>
A team P of 20 engineers can complete work or task in 32 days. Another team Q of 16 engineers can complete same task in 30 days.Then the ratio of working capacity of 1 member of P to the 1 member of Q is
a. 3 : 2