Question
Simplify the following expressions and choose the
correct option. [(13)² − (9)²] × (5/8) = ?Solution
ATQ, 13² = 169, 9² = 81 169 − 81 = 88 88 × (5/8) = 11 × 5 = 55
A boy can swim in still water at a speed of 15 km/hr. If the speed of the current would have been 9 km/hr, then the boy could swim 48 km
The speed of a boat in still water is 32km/hr and the speed of the current is 8km/hr. It takes a total of 15hours to row to upstream from Point A to B a...
The ratio between the time taken by a boat to cover a certain distance in upstream and the same distance in downstream is 5:1 respectively. The same boa...
A boat can go 15 km upstream and 21 km downstream in 2 hours. If the speed of the stream is 3 km/h, then the time taken (in hours) by the boat to go 21 ...
A boat travels in a river where the current flows at a speed of 5 km/h. The total time taken by the boat to go from point 'P' to ...
The downstream speed of a boat is 25% more than its upstream speed. The boat takes 3.2 hours to travel 57.6 km upstream.
W...
A boat’s speed against the stream is 66.67% less than its speed in still water. If it covers 180 km downstream in 4 hours, find the time (in minutes) ...
A boat takes 5 hours longer to travel 15 km upstream than it does to travel 20 km downstream. The speed of the boat in still water is 5 km/hr. Calculate...
Speed of current is equal to 25% of speed of boat in still water. If the boat takes 5 hours to cover 120 km in still water, then find the time taken by ...
A boat goes 40km upstream in 8 hours and 36km downstream in 6 hours. The speed of the boat in still water.
Relevant for Exams:
