A boat covers 25 km upstream and 44 km downstream in t hours. Also, it covers 15 km upstream and 22 km downstream in 5 hours. Find the speed of the boat in still water and that of the stream.​

Step-by-step explanation:

Speed of boat in still water=x km/hr

Speed of stream=y km/hr Speed of upstream=x-y km/hr

Speed of downstream=x+y km/hr

Let 1/(x-y)=a and 1/(x+y)=b

Time to go 25km up and 44 down=9

25a+44b=9>(1)

Time to go 15km up and 22km down=5

15a+22b=5>(2)

(2) x 2=> 30a+4463D10- ->(3)

(3)-(1)=>5a=1

a=1/5

1/(x-y)=1/5

x-y=5--->(4)

Putting a=1/5 in (1),

5+44b=9

44b=4

b=1/11

1/(x+y)=1/11

x+y=11>(5)

(4)+(5)=>2x=16

answer: i think the answer is etheir c or d but i don't know which one but have a good day!

step-by-step explanation:

b

step-by-step explanation: