Question

I will mark you brainiest if you answer it correctly


A motor boat whose speed is 18km/h in still water takes 1 hour more to go 24km upstream than to return downstream to the same spot. Find the speed of the stream

Answer 1

Answer:

the speed of stream = 6km/hr

Step-by-step explanation:

Let the speed of the stream be x km\hr.

The speed of the boat upstream = (18 - x) km/hr

The speed of the boat downstream = (18 + x) km/hr

Distance = 24 km

As given in the question,

Time for upstream = 1 + Time for downstream

24/(18 - x) = 1 + 24/(18 + x)

24/(18 - x) - 24/(18 + x) = 1

x2 + 48x - 324 = 0

(x + 54)(x - 6) = 0

x ≠ - 54 as speed cannot be negative.

x = 6

The speed of the stream = 6 km/hr

I hope it helps you

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Answer 2

Answer:

Hey mate,

here's ur answer in the attachment above. U need to follow the same process to have ur answer perfect.

Hope it helps

Please mark it as a brainliest