Question

question number 20 please solve....
I will mark as brainliest.....

Answer 1

your answer is 800km please mark me as brainliest if you likes the answer

Answer 2

Answer:

Speed = 36 km/hr

Distance = 800 km.

Step-by-step explanation:

Let the speed of the steamer in still water = 'x'.

Given, Speed of water = 4 km/hr.

Distance = Speed * Time

(i)

Downstream speed = (x + 4) km/hr.

Distance covered = 20(x + 4)

(ii)

Upstream speed = (x - 4) km/hr.

Distance covered = 25(x - 4)

On solving (i) & (ii), we get

⇒ 20(x + 4) = 25(x - 4)

⇒ 20x + 80 = 25x - 100

⇒ 20x - 25x = -100 - 80

⇒ -5x = -180

⇒ x = 36.

Hence,distance between the two towns:

⇒ 20(x + 4)

⇒ 20(36 + 4)

⇒ 800 km

Therefore:

⇒ Speed of the steamer in still water = 36 km/hr.

⇒ Distance between the two towns = 800 km.

Hope it helps!