Question

A man riding on a bicycle covers a distance of 60 km in a direction of wind and comes back to his original position in 8 hours if the speed of wind is 10 km per hour find the speed of bicycle

Answer 1

Answer:

20 km/hr

Step-by-step explanation:

x - speed of the cycle

x+10 - speed of the cycle in a direction of a wind

x-10 - speed of the cycle against the wind

Distance/Speed = Time

60/( x+10 ) + 60/ ( x-10) = 8

Solve the equation we get

x$x^{2} - 15x - 100 = 0\\x^{2} - 15x + 56.25 - 56.25 - 100 = 0\\(x - 7.5)^{2} = 156.25\\x - 7.5 = 12.5\\x = 20 Km/Hr$

Answer 2

Answer:20 km/h

Hope it helps..

Mark it as brainlist..