Question
Bharti, Chiku, and Diksha complete 30%, 40%, and 20% of
a task in 6 days, 12 days, and 8 days, respectively. How many days will it take for them to collectively complete 97.5% of the task?Solution
ATQ, Time taken by Bharti to complete whole work = 6/0.3 = 20 days Time taken by Chiku to complete whole work = 12/0.4 = 30 days Time taken by Diksha to complete whole work = 8/0.2 = 40 days Let total work = 120 units (LCM of 20, 30 and 40) Efficiency of A = 120/20 = 6 units per day Efficiency of B = 120/30 = 4 units per day Efficiency of C = 120/40 = 3 units per day Required time taken = (120 × 0.975)/13 = 9 days
9 10 6 15 -1 ?
...There are 3 series, you have to find value of a, b, c and then establish relation among a,b,c.
19, 25, 45, a, 553, 2767
1560 760 360 160 6...
13 22 40 67 103 ?
...112 ? 336 840 2520 8820
...2, 12, 90, 240, ?, 1260
1 5 13 25 41 ...
43 36 50 29 ? 22
...5 3 3 5 15 ?
The following expressions form a series followed by a (?). Find the odd one out first and then find that what will come in place of the question mark (?...
5 16 ? 66 119 200
...
Relevant for Exams:
