Question
The speed of a boat is that of the current of water is
40:3. The boat goes along with the current in 3 hours 8 minutes. It will come back inSolution
Let the speed of the boat in still water = 40 km/hr And the speed of the current = 3 km/hr Time = 3 hours 8 minutes = 25/8 hrs Downstream speed = 40 + 3 = 43 km/hr Upstream speed = 40 – 3 = 37 km/hr Distance = Downstream speed × Downstream time Distance = [43 × (25/8)] km Upstream time = Distance / Upstream speed Upstream time = [43 × (25/8)]/37 = 3(2/3) hrs
? = 650.24 + 1124.97 – 14.992
124% of 620.99 + 11.65% of 1279.23 = ?
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.)...
6527.83 - 4891.21 + 7423.46 + ? = 14520.34
20% of 80 × 26% of 65 = ?
185.92 ÷ 5.98 - (4.002)2 + 114.03 of 5.03 ÷ 18.99 of 6.04 = 5.01 of 2.99 + ? ÷ 12.02
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.)...
`sqrt623.798` × 24.034 +`sqrt403.898` × 17.907 =?
600.11 ÷ 14.98 x 5.14 – 171.9 = √?
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