Rabia can finish a work in 12 days. Sarita can finish the same work in 18 days. In how many days will the work be finished if they work together?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 1 i.e. .
Rabia can finish work in 12 days
Sarita can finish the same work in 18 days
L.C.M(12 and 18) = 216
The efficiency of Rabia = 216/12 = 18 units
The efficiency of Sarita = 216/18 = 12 units
Time taken = 216/(18 + 12) = 216/30 = 72/10 =