Question
‘M’ is 60% more efficient than ‘N’. ‘N’
started the work alone and worked for 20 days and after that ‘N’ is replaced by ‘M’. If the total work is completed in 30 days, find the time taken by ‘M’ to finish the same work alone?Solution
Let the efficiency of ‘N’ = ‘5x’ units/day Efficiency of ‘M’ = ‘8x’ units/day Time taken by ‘M’ to complete the remaining work = 30 – 20 = 10 days Total work = 20 × 5x + 10 × 8x = 180x units Desired time = 180x/8x = 22.5 days
In each of the questions below, a sentence is given with two blanks, indicating that some parts are missing. Identify the correct pair of words that fit...
Fill in the blank/s with suitable Word/s:
The teacher wanted to _________ the students to think critically about the topic.
In the following question ,sentences are given with blanks to be filled in with an appropriate word.four alternative is suggested for each question.
Given below is a sentence with one blank in each. Below each sentence are given four words among which one word might fill the blank. If none of the wo...
The …………… of Sri Lankan fisherman and their boats that were released on the orders of the State Government is being d...
Select the most appropriate option to fill in the blank.
She ______ why I had not sent her an invitation.
A poor man and his family ate ________ little other residents of the town were kind enough to spare. One day, when he and his family sat down to eat, a ...
It is possible to plug into remote databases to ____________ information.
Select the most appropriate option to fill in the blank.
The pleasant ______ of the rain as it fell on the dust made me feel nostalgic.
Unauthorised leaks, hacking and other cybercrimes have _________ data bases vulnerable.
(A) fulfilled
(B) left
