Start learning 50% faster. Sign in now
Marks obtained in first paper = 45/100 × 160 = 72 Marks to be obtained in both the papers (160+140) × 66/100 = 198 ∴ Marks to be obtained necessarily is second paper = 198 - 72 = 126 ∴ Percentage of marks to be obtained in second paper = 126/140 × 100 = 90%
Find the total distance covered by boat in each upstream and downstream in 7 hours if the speed of boat in still water and speed of current is 25 km/h a...
A man swims 2km/h against the stream and goes 1 km in 10 minutes along the stream, how much time will it take to cover 5 km in still water?
The speed of the boat in still water is 6 km/hr and the speed of the stream is 3 km/hr. A boat goes 108 km downstream with its usual speed but at the ti...
The speed of a boat in still water is 6 km/hr more than that of the current. The time taken by the boat to cover 625 km downstream is 12.5 hours. Find t...
The speed of a boat in still water is 7 km/hr and speed of current is 3 km/hr. If time taken to cover a certain distance upstream is 10 hours, then how ...
A boy can swim in water with a speed of 15 km/hr in still water. If the speed of the stream is 8 km/hr, what will be the time taken by the boy to cover ...
Speed of boat is 10 km/hr. Speed of the stream is 30% less than speed of boat. Then find time taken by boat to go 34 km downstream?
A man can go on a motor boat with a speed of 15 km/hour in still water, he goes to a certain distance upstream and come back to the starting point in a ...
Speed of a boat in still water is 3 times more than the speed of stream. If boat covers 135 km in downstream in 9 hours, then find the time taken by the...
Boat ‘A’ can cover 120 km in still water in 10 hours. In still water, if the ratio of the speed of boat ‘A’ to that of ‘B’ is 4:5 and the sp...