Posted by roger on Friday, August 29, 2014 at 2:04pm.
A man goes upstream for a distance of 10 kms in 5 hours. Another man goes downstream the same distance of 10 kms in 3 hours. what is the difference in speeds of two men if the river speed is 0.5 km/hr
- maths - Steve, Friday, August 29, 2014 at 2:17pm
since distance = speed*time, if the still-water speeds of the men are a and b,
(a-.5)(5) = 10
(b+.5)(3) = 10
5a - 5/2 = 10
3b + 3/2 = 10
b-a = (10 - 3/2)/3 - (10+5/2)/5 = 1/3
- maths - roger, Friday, August 29, 2014 at 3:55pm
Sir, I am also getting this as the answer. but the options given are :-
- maths - manoj, Wednesday, February 4, 2015 at 9:01am
- maths - pradeep ponduri, Saturday, September 19, 2015 at 12:59pm
upstream speed =Distance/time
downstream speed of =10/3=3.33kmph
Answer This Question
More Related Questions
- algebra - a car goes at a constant speed for 120 kms, on the way back he goes at...
- math, physics - A motorboat goes upstream on a river and covers the distance ...
- Maths Algebra - A steamer goes downstream and covers the distance between two ...
- maths - a steamer goes downstream in a river and covers the distance between ...
- maths - A boat goes 30 km upstream and 44 km downstream in 10 hours. In 13 hours...
- maths - A boat goes 12 km upstream and 40 km downstream in 8 hours. It can go ...
- Help...More Math Help!!!...Please! - A kayaker paddled 2 hours with a 6 mph ...
- math - A man can row 4 kilometers per hour in still water. When the river is ...
- word problem - A motor boat took 4 hours to make a downstream trip with a ...
- math - a man rows downstream for one hour and 40 minutes on a river flowing at 2...