Question
Saurabh can complete a piece of work in 20 days. He
worked for 5 days and left. Anirudh completed the remaining work in 12 days. If both of them had done the work together, the work would have been completed in how many days?Solution
Saurabh can complete a piece of work in 20 days=1 Saurabh can complete a piece of work in 1 days=1/20 After 5 days =5/20=¼ remaining work=1-¼=¾ ATQ- Anirudh ¾ =12days Anirudh can do a work =16 days so now Saurabh Anirudh 20 16 80 4 5 Saurabh and Anirudh had done work complete=80/5+4 =80/9 = 889days
What will be the value of expression if the signs ‘(+)’ and ‘(×)’ are interchanged?
63 + 7 ÷ 21 × 14 – 24 ÷ 6
...If all the alphabets of alphabetical series are numbered as 26-1 from A-Z then what is the sum of the numbers of letters of the word “ PARENT ”?
Which two signs should be interchanged in the following equation to make it correct:
640 ÷ 80 + 6 × 20 – 10 = 58