Let son’s age = x, and father’s age = 3x. After 10 years, father’s age = 3x + 10, and son’s age = x + 10. (3x + 10) = 2(x + 10) Solving for x, x = 10. Father’s age = 3(10) = 30, Son’s age = 10. Correct Option: a) Father: 30, Son: 10
Speed of a boat in still water is 10 km/h while the speed of stream is ____ km/h. Total time taken by the boat to go 100 km upstream and 150 km downstre...
A boat covers 13 km upstream in 52 min. If the speed of the current is 3 km / h, then in how much time will it cover 40 km downstream?
Find the total distance covered by boat in each upstream and downstream in 8 hours if the speed of boat in still water and speed of current is 26 km/h a...
The speed of current is 26 km/hr. If the speed of the boat in still water had been 12 km/hr more than the original speed then it would take 7.5 hours to...
The cost price of an item is 60% less than its marked price, which is 50% more than its selling price. What is the profit percent...
A boat can travel 225 km downstream in 5 hours. If the speed of the boat in still water is 7 times the speed of the stream, how m...
A boat can travel 30 km downstream in 45 min. The ratio of the speed of the boat in still water to the speed of the stream is 5: 3. How much time will t...
A boat travels the same distance 'd' km in both upstream and downstream directions, taking a total of 15 hours for the round trip. If the downstream spe...
A person can swim at the rate of five kilometers per hour in still water. The time taken by him to swim a certain distance downstream is 3 times the tim...
A boat goes 6km an hour in still water, it takes thrice as much time to go the same distance against the current in comparison to the direction of the c...
