Question
A boat covers 13 km upstream in 52 min. If the speed of
the current is 6 km / h, then in how much time will it cover 40 km downstream?Solution
Let the speed of boat in still water =B and speed of stream =S Speed of boat in upstream =B-S=13×60/52 =15km/h S=6km/h B=21km/h Speed of boat in downstream =B+S=27km/h Take time cover 40km in downstream =40/27 hr.
More Boats and streams Questions
- 48% of 300 – 24% of 150 = 12% of ?
(160 × 12 - 13 × 20)/(120 × 2 + 2 × 35 + 2 × 11) = ?
- What will come in the place of question mark (?) in the given expression?
435 + 729 - 282 x 2 = ? + 225 + 125 - Determine the value of ‘p’ if p = √529 + √1444
8 × (25 % of 720) – 50 % of 135 % of 840 = ?
If 840 ÷ 12 + 1025 ÷ 25 - n + 45 × 4 = 960 ÷ 16 × 132 ÷ 44, then the value of n is:
- Find the value of:
35% of [150% of (45 + 15) + 150] ÷ 75 × 80 - What will come in place of (?) in the given expression.
(84 + 36 ÷ 6) × 2 = ? 255 × 8 + 386 × 5 =? % of 7940
√ (573 – 819 + 775) = ? ÷ 3
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