Question
‘A’ alone can complete a work in 10 days. ‘B’
alone can complete the same work in 15 days. If ‘A’ and ‘B’ work together for 3 days, then the remaining work can be completed by ‘A’ alone in how many days?Solution
Let the total amount of work = 30 units {LCM of 10 and 15} Then, efficiency of ‘A’ = 30/10 = 3 units/day Efficiency of ‘B’ = 30/15 = 2 units/day Combined efficiency of ‘A’ and ‘B’ = 3 + 2 = 6 units/day Work completed by ‘A’ and ‘B’ together in 3 days = 5 × 3 = 15 units Remaining work = 30 – 15 = 15 units Time taken by ‘A’ alone to complete the remaining work = 15/3 = 5 days
Find out the appropriate word.
The board members (1)/ has agreed to (2)/ implement the new policies (3)/ from next month. (4)/ No error (5)
- Parts of the following sentence have been given as options. Select the option that contains an error.
She did not wanted to go to the party because... India's power demand is expect to soar (1)/in summer, with weather officials forecasting (2)/maximum temperatures above normal in April (3)/in many nort...
Select the segment which has a grammatical error in the given sentence.
Most of the roads we see in India is used to carry the goods.
I have been knowing(1)/ him for the last(2)/ five years but now I don’t(3)/ know where he lives.(4)
Below is given a sentence divided in parts. Read the sentence to find out whether there is any error in it. The error, if any, will be in one p...
He complained to the police (a)/ that his briefcase had been stolen (b)/ and that he was lifted without any money. (c)/ No error (d)
I hope the country’s condition (a) may go from bad to worse (b)/ unless all necessary steps / are taken to suppress terrorism. (c)/ No error (d)
I and you must meet often to be updated about each other.
Relevant for Exams:
