Question

18km/hr downstream speed and 12 km/hr upstream speed, distance is 60 km find the time?

Answer 1

Answer:

time= distance/speed

x=15,y=3

speed= 18

distance is 60 km

time is 18

Answer 2

The time taken to complete the 60 km is 4 hr.

Explanation:

Given the downstream speed, V = 18 km/hr.

The upstream speed, v = 12 km/hr.

Therefore, we can calculate average speed, u as

$u=\frac{v+V}{2}$

substitute the values, we get

$u=\frac{12km/hr+18km/hr}{2}$

u = 15 km/hr.

Given distance = 60 km.

So, time taken,

$t=\frac{d}{u}=\frac{60km}{15km/hr}$

t = 4 hr.

Thus, the time taken to complete the 60 km is 4 hr.

#Learn More: speed.

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