Math, asked by guptaaarav225, 6 months ago

A man can row 40 km upstream and 55 km downstream in 13 hours also, he can row 30 km upstream and 44 km downstream in 10 hours. Find the speed of the man in still water and the speed of the current. एक आदमी 40 किमी धारा की विपरीत दिशा और 55 किमी धारा की दिशा 13 घंटे में भी दौड़ सकता है, वह 30 किमी धारा की विपरीत दिशा और 44 किमी धारा की विपरीत दिशा में 10 घंटे में दौड़ सकता है। शांत पानी में आदमी की गति और धारा की गति का पता लगाएं।​

Answers

Answered by RATNESH432004
0

Answer:

Let a be the rate upstream

and b be the rate down stream

Therefore,

a

40

+

b

55

=13

and

a

30

+

b

44

=10

Multiply equation y by 4 and equation x by 3 and subtracting.

b

11

=10orb=11

putting the value b=11 in equation x

a = 5

rate in still water =

2

1

(11+5)=8km/h

rate of current =

2

1

(11−5)

=3km/h

Answered by nr582332
0

Answer:

8kmph & 3kmph

Step-by-step explanation:

this is an answer

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