Let the total work = L.C.M of 35, 20 and 28 = 140 units Then, efficiency of 'A' = 140 ÷ 35 = 4 units/day Efficiency of 'B' = 140 ÷ 20 = 7 units/day Efficiency of 'C' = 140 ÷ 28 = 5 units/day Work done by 'A' alone in 5 days = 4 X 5 = 20 units So, work done by 'B' and 'C' in 'x' days = 140 - 20 = 120 units So, x = 120 ÷ (7 + 5) = 10
Smog is a combination of –
A dynamo is primarily used to convert:
Quantum Theory was discovered by?
Temperature of the Sun is measured by
Twinkling of the Stars is due to the phenomenon of
Who discovered the electron?
Where is the gravitational acceleration zero?
Which physical property is considered dimensionless?
Which of the following is the best fire-extinguisher?
The Atom Bomb dropped in Nagasaki is an uncontrolled nuclear fission made up of:
