Question
A contractor undertook to do a work in 60 days and
employed 30 men to do it. After 45 days he found that only `3/5` th of the work was done. How many more men must be employed so that the work may be finished in time?Solution
Applying chain rule, (45 x 30)/(3/5) = (M2 x 15)/(2/5) Mâ‚‚ = (5 x 45 x 30 x2)/(15 x 5 x 3) = 60 men Required men = 60 – 30 = 30 men
More Time and work Questions
29% of 400 + 66% of 1100 - 50% of 1200 = ?Â
(47.5 ÷ 9.5) × (78.5 ÷ 15.7) + 475 = ? + 15% of 150
What will come in the place of question mark (?) in the given expression?
(17/27) of 162 + ?² = 632 - (73 - 12) X 5If x + y + 3 = 0, then find the value of x3 + y3 – 9xy + 9.
√324 + √576 = ?/ √9
1/6+ 999*53/54 ×9 = ?
22 + 60 × 3 ÷ 12 = ?
? = 60% of 2500 + 85% of 2000 – 5³
654.056 + 28.9015 × 44.851 – 43.129 = ?
4261 + 8234 + 2913 + 8217 + 6283 + 4172 =?
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