Question

A man swim in a river with and aginst the water at rate of 15km/hr and 5km/hr.find the man speed in still water and the speed of river.

Answer 1

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հίί ʍαtε_______✯◡✯
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һєяє' ʏȏȗя ѧṅśwєя ʟȏȏҡıṅɢ ғȏя________
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✯♦it's given that ,

●let the speed of man in still water = x km/hr

● speed of river man with the water flow ,

$(x - y)km/h$
so ,

x + y = 15 _________ ❶

x - y = 5 ___________ ❷

now let's add the ❶ and ❷ equations ,

then we get ,

2x = 20

x = 20 / 2

x = 10 .

then , from first ❶ equation ;

we get ,

y = 5

♦ speed of man in still water = 10 km/h

so ,speed of river is 5 km/h.

$hope \: it \: helps$

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★★BRAINLY★★

Answer 2

нєℓℓσ ∂єαя υѕєя!!!


нєяє ιѕ уσυя αиѕωєя тнαт уσυ αяє ωαιтιиg fσя:


qυєѕтισи:




αиѕωєя:

Given;


let the speed of man in still water be x km/hr

Speed of river man with the water flow ,so according to the question we get;

x + y = 15 ________ let us consider it as equation 1

x - y = 5 ___________ and equation 2

From equation 1 and 2 ; we get

x + y = 15

x - y = 5
__________
2x = 20

We get

x = 10

Substitute 'x' value in equation 1, we get

x + y =15

10 + y = 15

y = 15 - 10

Therefore we get y = 5

speed of man in still water is 10 km/h


Therefore the speed of the river is 5 km/h.



ι нσρє тнιѕ ωιℓℓ нєℓρѕ уσυ.... :)



нανє α gяєαт ∂αу αнєα∂ ^_^



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