Question
3 men, 4 women and 5 boys can do a piece of work in 15
days, 20 days and 25 days respectively. For first 3 days 3 men and 2 women work together and for the next 3 days, 2 women and 5 boys work together. Find out how many days 3 men and 5 boys will take to complete the remaining work?Solution
3 men can do work in = 15 days 4 women can do work in = 20 days 5 boys can do work in = 25 days According to question First 3 days work = (3M + 2W) × 3 Next 3 days work = (2W + 5B) × 3 So total 6 days work = (3M + 4W + 5B) × 3 = (1/15+ 1/20+1/25)× 3 = (1/5+ 3/20+3/25) = (20 + 15 +12 )/100 = 47/100 Remaining work = 1- 47/100 = 53/100 1 day work for 3 men and 5 boys = 1/15+ 1/25 = (10 + 6)/150 = 16/150 So 3 men and 5 boys will take days to complete the remaining work = (53/100) × (150/16) = 4(31/32) days
What will come in place of (?) Question mark in the given number series.
5, 26, 68, 131, 215, 320, ?
1, 7, 37, 187, 937, ?
8, ?, 29, 57, 113, 225
30, 42, 54, 66, ?, 90
- What will come in place of the question mark (?) in the following series?
29, 32, 41, 68, ?, 392 226  231   466  ?  5606  28031    Â
- What will come in place of the question mark (?) in the following series?
3, 10, 29, 66, 127, ? What will come in place of the question mark (?) in the following series?
102, 111, 136, 185, 266, ?
15.975 ×27.825 + (76.01)² + 12.98×18.426 = ?+ (79.09)²
23 45 89 155 ? 353
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