Question
21 men can complete 3/5 part of a work in 8 days working
9 hours a day. How many women can complete rest of the work if they work for 6 hours a day for 21 days and efficiency of a man is four times the efficiency of a woman.Solution
Let number of women be W. We know that, (M1 × D1 × H1 × E1)/W1 = (M2 × D2 × H2 × E2)/W2 (21 × 8 × 9 × 4)/(3/5) = (W × 21 × 6 × 1)/(2/5) W = 32
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22, 37, 63, 98, 148, ?
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81 72 136 111 ? 278
...?, 6, 6, 9, 18, 45
16, 20, 11, 27, ?, 38
18, 54, 162, ?, 1458, 4374
16, 24, ?, 64, 104, 168, 272
- What will come in place of the question mark (?) in the following series?
121, 115, 102, 82, 55, ? 2, 13, 27, 44, ?, 87
58, 67, ?, 76, 40, 85
