‘A’ alone can complete a work in 40 hours. ‘A’ started the work alone and left after working on it for 20 hours. If ‘B’ completed the rest of the work in 20 hours then find the time taken by ‘A’ and ‘B’ together to complete the whole work.
Let the total work = 300 units Then, efficiency of ‘A’ = (300/40) = 7.5 units/hour Work completed by ‘A’ alone in 20 hours = 7.5 × 20 = 150 units Remaining work = 300 – 150 = 150 units So, efficiency of ‘B’ = 150/20 = 7.5 units/hour Therefore, combined efficiency of ‘A’ and ‘B’ = 7.5 + 7.5 = 15 units/hour So, time taken by ‘A’ and ‘B’ together to complete the work = (300/15) = 20 hours
A state of absence of law.
A person who exercises power in a cruel way
Come, take a ________.
He is my __________.
One vowed to a single or unmarried life.
Suppress
Select the most appropriate meaning of the given idiom.
Break the ice
A) Duress B) Edict C) Volition D) Callous
...Find out the wrongly spelt word and mark that option as the answer.
A person who collects and studies stamps.
