Question
A boat goes 40 km in upstream in 5 hours and takes 3
hours to complete a distance of 18 km in downstream. Find the speed of boat in still water.Solution
Speed of boat in still water = (D + U)/2 Upstream speed (U) = 40/5 = 8 km/hr Downstream speed (D) = 18/3 = 6 km/hr Speed of boat in still water = (8 + 6)/2 = 14/2 = 7 km/hr
More Boats and streams Questions
30% of 215 + 135% of ? = 469.5
95% of 830 - ? % of 2770 = 650
Solve the following equation.
143 + 14.3 + 1.43 + 0.143 + 0.0143 =?
81% of 2300 – 34% of 550 = ?
135.37 – 50.24 + 629.09 – 199.50 = ? – 214.68 + 42.65
- Simplify the expression:
30% of [140% of (50 + 30) + 110] ÷ 70 × 100 - What will come in place of (?), in the given expression.
(56 × 3) + (480 ÷ 6) = ? 11 × 25 + 12 × 15 + 14 × 20 + 15 = ?
What will come in place of the question mark (?) in the following expression?
18 × 16 – 11 × 4 = 15² + ?
{(3/8) + (5/6)} × 120 – 53 = ?Â
