Question

A boat takes 7 hours for travelling downstream from
point 'A' to point 'B' and coming back to point 'A*
travelling upstream. If the velocity of the stream is 3
kmph and the speed of the boat in still water is 7 kmph,
what is the distance between A and B?
(a) 1.0 km (b) 15 km wet 30 km (d) 22 km
7.) A river is running at 3 kmph. If a man takes twice as
Tong to row up as to row down the river, the rate of
man in still water is:
La9 kmph (b) 12 kmph
(c) 6 kmph
Id) 10 kmph
8. Ajit can row a quarter of a km against the stream flow
in 11.25 minutes and return in 6.25 minutes. The
speed of Ajit in still water is​

Answer 1

Answer:

30 is the answer for 6th one

Answer 2

Answer:

time ka ratio bnyee gee hm t - upstream: downstream ju 2:1 bnee then tu hmee ptaa distance same hai tu speed ka ratio hmraa 1:2 bn jyee gaa aab hmmee ptaa 1 ki value 3 de hoii haii tu 2 ki value 6kmph hogi still water mai

7 - (c) - 6 kmph