Question

A man can row upstream at 10 km/h and downstream at 18 km/h and the rate of stream is 18 km/h. find the speed of man in still water and speed of current.​

Answer 1

$\huge\mathtt \red{a} \pink{n}{s} \green{w} \purple{e} \orange{r}$

Step-by-step explanation:

Upstream speed = 10km/h and

Downstream speed = 18km/h

therefore, Speed of man in still water

$= \frac{1}{2} \mathtt\blue{(downstream \: speed + upstream \: speed)}$

$= \frac{1}{2} (18 + 10)$

$= \frac{28}{2}$

= 14 km/h

Now, speed of current

$= \frac{1}{2} \mathtt \purple{(downstream \: speed - upstream \: speed)}$

$= \frac{1}{2} (18 - 10)$

$= \frac{8}{2}$

= 4 km/h.

$\mathfrak \green{hope \: you \: understand \: this}$

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