Question
The speed of a boat in still water is twice the speed of
the current. The difference between downstream and upstream speeds is 16 km/h. If the boat spends 10 hours to travel the same distance 'q' km each way, find 'q'.Solution
ATQ, Let the speed of the stream = t km/h Speed of the boat in still water = 2t km/h Upstream speed of the boat = 2t – t = t km/h Downstream speed of the boat = 2t + t = 3t km/h Difference in Speed: - 3t - t = 2t = 16 km/h, so, t = 8 km/h Calculate the time for each distance 'q': 
25.04 × 22.03 + 383.92 ÷ ? + 23.78% of 1499.98 = 926.08
(32.18% of 2399.89 - √624 × 26.25) % of 149.79 = ?
189.23 + 18.11² + ?³ = √841.76 * 28.94
What is the smallest integer that should be subtracted from 653 to make it divisible by both 23 and 27?
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.)...
- 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.)
739.85 + 5003 ÷ 24.99 × 69.999 = ?
(39.933% of 30.03) - (27.78 `xx` 15.30) = ? - (40 `xx` 38.87)
30.11% of 149.99 + √195.97 ÷ 7.02 = ?
What approximate value will come in place of question (?) in the following given expression? You are not expected to calculate the exact value.
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