Question
A boat moving downstream covers a distance of 200km in 5
hrs as long as to cover the same distance upstream it takes 10hrs. What will be the time taken by boat in still water to cover 360km.Solution
Let a boat moving in Downstream speed , (V + S) = 200/5 …..(1) = 40 km/h Upstream speed, (V - S) = 200/10…… (2) = 20 km/h Adding both equations (1) and (2) 2V= 60 km/h V= 30km/h Time in which boat will cover 360km in still water will be = 360/30 = 12 hrs.
More Boats and streams Questions
11.99% of 199.99 ÷ 8.17 = ? ÷ 14.15
49.99% of 5400 + 923=?
28.11 × 3.98 + 29.03 × 3.12 – 34.95 + 95.9 × 4.02 =?
(660.05) ÷ 120.04% of (55.022/2.24) = (? ÷ 10.02)
(5.013 – 20.04) = ? + 9.98% of 6199.98
What approximate value will replace the question mark (?) in the following?
39.99...
11.11% of 1800.89 + 34.89 X 10.99 - 500.50 = ?
26.23 × 31.82 + 44.8% of 1200 + ? = 1520
25.09 × (√15 + 19.83) = ? of 19.87 ÷ 4.03
2550.03 ÷ 74.98 x 49.9 = ? + 20.32
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