Question

एक व्यक्ति धारा का दिशा में 11 किमी/घण्टा की गति
के विपरीत दिशा में 8किमी/घण्टा की गति से नाव चला सकता है।
धारा की गति है-​

Answer 1

Answer:

1.5km/h

Step-by-step explanation:

let a is speed of man

and x is the speed of stream(dhara).

a-x=8

a+x=11

so 2a=19

a=19/2 that is..9.5km/h

a/q_a-x=8

so 9.5-x=8

x=9.5-8 which is 1.5km/h

Answer 2

Step-by-step explanation:

let man will be x

let boat of stream will be y

so 1st condition

x+11 = y

x-y = 11

2nd condition

x+y = 8

using elimination method ( any method u can use which uh will be select on easy )

x+y = 8

x-y = 11

_______

2x = 19

x = 19 /2

x = 9.5

which is 1.5 km