Question
A contractor undertook to make 20 km of roadway in 48
weeks. In 28 weeks, 8 km was completed by 120 men working 12 hours a day. The men then agreed to work 3 hour a day overtime and some women were engaged to assist them, the work was finished in the stipulated time. How many women were employed, if the work of 8 men is equal to that of 5 women.Solution
8M = 5W So M/W = 5/8 By M1D1H1/W1 = M2D2H2/W2 (120M × 12 × 28)/8 = [(120M + xW) × 15 × 20]/12 (120×5 × 12 × 28)/8 = [(120×5 + x×8) × 15 × 20]/12 28×3×12 = 600 +8x  8x = 1008 - 600 = 408 So x = 408/8 = 51
837.04 × 4.02 + 40.04% of 3049.98 – 3667.82 = ? 2 – 60.87
`sqrt623.798` × 24.034 +`sqrt403.898` × 17.907 =?
A wire is bent to form a square whose sides are of 132 cm. If the same wire is bent to form a circle, then find the area (in cm2) of the circ...
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What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
(27.08)2 – (14.89)2 – (22.17)2 = ?
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