Question
Ashish and Anil can do a piece of work in 20 days and 25
days respectively. Ashish completed 60% of the work. Find the time taken by Anil to complete the remaining work.Solution
Let the total work be (LCM of 20 and 25) = 100 units Efficiency of Anil = 100/25 = 4 units/day Remaining work = 100 x 0.4 = 40 units Time taken by Anil to complete the remaining work = 40/4 = 10 days
The average of 11 observations is 60. If the average of first five observations is 58 and that of last five is 56, the sixth observation is
Average of 20 numbers is 90. Average of first 8 numbers is 92 while average of last nine numbers is 40. If ninth number is 25% less than the tenth numbe...
The income of B is 85% of A and income of C is Rs 3600 more than that of B. The average income of all three together is Rs. 8400. A and B spend 50% of t...
A player scored an average of 58 runs per match in the first 30 matches. In his next 10 matches, he scored runs with an average of ‘x’ runs per matc...
The average mark obtained by 140 candidates in a certain examination is 40. If the average marks of passed candidates are 55 and that of the failed cand...
The average number of books on history, polity and geography in a library is 110, and the average number of books on history and geography is 120. If th...
- The average of 9 scores is 45. If two new scores are added and their average is 'x', the overall average becomes 20% more than the previous average. Find t...
In an examination the average marks of Rohit is 55. If he got 15 more marks in science and 27 more marks in maths then his average would have been 61. F...
The average of 8 numbers is 5.95. The average of two of them is 5.4, while the average of the other two is 5.86. the average of the remaining four numbe...
If the average of two numbers is 20 and the square root of their product is 16, then the difference between the numbers is:
Relevant for Exams:
