Question
If A can complete a job in 15 days and B can complete
the same job in 10 days, and they work together for 4 days before A leaves. How many more days will B take to finish the job alone?Solution
A's work rate = 1/15; B's work rate = 1/10. Combined work rate = 1/15 + 1/10 = (2 + 3) / 30 = 5/30 = 1/6. Work done in 4 days = 4 * (1/6) = 2/3. Remaining work = 1 - 2/3 = 1/3. B's time to finish remaining work = (1/3) / (1/10) = (1/3) * 10 = 10/3 = 3.33 days.
If 314 306 x 269 394 178 1480
Then, 1/3 x + 2x - x = ?
...2, 12, 36, 80, ?, 252
640 320 160 ? 40 20
37 59 103 191 ? 719
7 15 31 63 127 ?
...3601 3602 1803 604 154 36
...12 156 256 320 356 ?
...48 50 54 57 ? 70
1 1 8 4 27 9 81
...Direction: Which of the following will replace ‘?’ in the given question?
2, ‘?’, 46, 136, 311, 605, 1086
