Question
Two workers, ‘X’ and ‘Y’, can finish a job in 25
days together. If ‘X’ is 25% more efficient than ‘Y’, find the number of days ‘Y’ alone would take to complete the job.Solution
Let the efficiency of ‘Y’ be 8x units. Efficiency of ‘X’ = 8x × 1.25 = 10x units Total work = 25 × (8x + 10x) = 450x units Time taken by ‘Y’ alone = 450x ÷ 8x = 56.25 days
What will come in place of the question mark (?) in the following series?
130, 158, 214, 298, ?, 550
Choose the missing term.
R, U, X, A, D,?
26, 227, 628, 1229, ?, 3031
What will come in place of the question mark (?) in the following series?
146, 122, ? , 74, 50, 26
Find the missing number in the given number series.
 1165, ?, 1040, 985, 935, 890Â
Find the missing number in the given number series.
2, 5, 16, 65, 326, ?21Â Â Â Â Â Â 24 Â Â Â Â Â Â 22Â Â Â Â Â Â 25Â Â Â Â Â 23Â Â Â Â Â Â Â ?Â
...16, 20, 11, 27, ?, 38
3 4 10 33 136 ?
...What will come in place of the question mark (?) in the following series?
1.5, 3.5, 9.5, 27.5, 81.5, 243.5, ?
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