Question

The distance of the School and house of Suresh is 80km. One day he was late by 1 hour
than the normal time to leave for the college, so he increased his speed by 4km/h and thus he
reached to college at the normal time. What is the changed speed of Suresh

Answer 1

Answer:

20km/h

Step-by-step explanation:

80/x - 80/(x+4) =1

x(x+20) - 16(x+20) = 0

x=16km/h

increased speed - 20kn/h