Tanvi can do a work in 25 days, and Tai can complete the same work in 30 days. They started the work together for 5 days. How much work is left?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. .
Tanvi can do a work in 25 days, and Tai can complete the same work in 30 days
L.C.M(25, and 30) = 150
The efficiency of Tanvi = 150/25 = 6 units
The efficiency of Tai = 150/30 = 5 units
They worked for 5 days
Work done in 5 days = 5 × (6 + 5) = 55 units
Work completed = 55/150 = 11/30
Remaining work = 1 - 11/30 =