A motor boat can travel 30km upstream and 28 km downstream in 7 hours. it can travel 21 km upstream and return in 5 hours. find the speed of boat in still water and speed of the stream.
Shivam691
Asked:
December 2022
a person on tour has Rs4200 for his expenses. If he extends his tour for 3 days, he has to cut down his daily expenses by Rs70. find the original duration of the tour.
Shivam691
Asked:
December 2022
A person rowing at the rate of 5km/h in still water, takes thrice as much time in going 40km upstream as in going 40km downstream. Find the speed of stream.
Shivam691
Asked:
December 2022
A thief runs with a uniform speed of 100m/minute . After one minute a policeman runs after the thief to catch him. He goes with a speed of 100m/minute in the first minute and increases his speed by 10m/min every succeeding minute. After how many minutes the police man will...
Shivam691
Asked:
December 2022
A man invested certain amount of money in two schemes A and B which offered interest at the rate of 8% per annum and 9% per annum respectively. He received Rs. 1860 as annual interest. However had he interchanged the amount of investment in two schemes, he would have received...