Question
A and B together can do a piece of work in 6 days and A
alone can do the same piece of work in 15 days. If both start working together and B works only half a day daily, then find the number of days A and B together can do the piece of work?Solution
A’s one day work = 1/15 part B’s one day work = 1/6 - 1/15 = (5-2)/30 = 1/10 part A’s one day work + B’s half day work = 1/15 + 1/20 = (4+3)/60 = 7/60 part Hence, A and B can together can do the work in = 60/7 = 8*4/7 days.
More Time and work Questions
What will come in place of the question mark (?) in the following series?
75, 219, 388, ?, 809, 106510296/72 + 3040 = (? × 4) + 1395
4, 12, 36, 108, ?, 396
What value should come in the place of (?) in the following number series?
192, 96, 96, 144, ?, 7205 6 15 40 89 170 ?
...What will come in place of the question mark (?) in the following number series?
21, 42, 67, 96, ?, 166
18, 34, 70, 134, ?, 378
60, 120, ?, 160, 32, 192
7, 176, ?, 378, 427, 452
...4, 9, 25, ?, 121, 169
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