Please solve the question.
Answers
Answer:
Let t = the time in hours for both speeds of 30 km/h and a speed of 40 km/h
Let d = the distance in km and let v = speed in km/h
The formula to solve for the distance traveled is d = vt.
Writing the equation for the 30 km/h trip
5 minutes = 5/60 h = 1/12 h
d = v(t+1/12)
d = 30(t +1/12)
Writing the equation for the 40 km/h trip
d = 40(t - 2/12)
Equating the two equations to solve for time t
40(t - 2/12) = 30(t+1/12)
40t - 80/12 = 30t +30/12
10t = 30/12 + 80/12
10t = 110 / 12
t = 0.9167 h
t = 55 minutes
t = 11/12 h
Solving for the distance using a speed of 30 km/h
d = 30 (t +1/12)
d = 30 * 12/12
d = 30 km
Solving for the distance using a speed of 40 km/h
d = 40(t - 2/12)
d = 40 * (11/12 - 2/12h)
d = 40 * 9/12
d = 30 km
The distance of his destination from starting point is 30 km.
you can write it is correct
No doubt
By: PURNANK JADHAV