Question
The time taken by a boat to cover
72 km downstream is 3 hours less than the boat to cover a certain distance in upstream. The downstream speed of the boat is 12 km/hr and the ratio of downstream and upstream speed of the boat is 4:3 respectively. Find the certain distance covered by the boat in upstream.Solution
ATQ,
Downstream speed = 12km/hr. Upstream speed = 3/4 ×12 = 9km/hr. Downstream time for 72km = 72/12 = 6 hrs Let upstream distance = 'x' km. Upstream time = x/9. Given: Upstream time is 3hours more than downstream time:. (x/9) - 6 = 3. Solve = x/9 = 9 x = 81
More Boats and streams Questions
If 1.123 × 3.211 = 3.122 + ______________, then the number in blank space is
242 + 80% of 1620 = ? × 16 – 35% of 800
60% of 120 – ?% of 64 = 20% of 200
Solve: 666/6/3 = ?
(7/5) × (3/4) × (5/9) × (6/7) × 3112 = ?
- What will come in the place of question mark (?) in the given expression?
389 + 641 - ? = 180 X 2 420 ÷ 7 + 140 % of 20 + ? × 13 = 18 × 15
√676 + (0.75 × 80) + (72 ÷ 3) = ? - 82
20% of 150 + 30 X 4 = ? X 5
