2. The distance between two places is 27 1/2 km. If the car is moving with a speed of 3 1/5 km per hour, how much time will be taken by the car to cover the given distance?
Answers
Answer:
Given,
Speed of car = x km/hr
Speed of train = (x+16) km/hr
And, we know that
Time = Distance / Speed
(i) Time taken by the car to reach town B from town A = 216/x hrs
(ii) Time taken by the train to reach town B from town A = 208/(x+16) hrs
(iii) According to the question, we have
x216=x+16208=2
x(x+16)216x+3456−208x=2
x(x+16)8x+3456=2
4x+1728=x2+16x
x2+12x−1728=0
x(x+48)−36(x+48)=0
(x+48)(x−36)=0
x=−48,36
As speed cannot be negative,
=36
(iv) Therefore, the speed of the train is (x+16)=(36+16) km/hr = 52 km/h
Answer:
8.59375 = 8.6 hours
Step-by-step explanation:
Distance between two places = 27 1/2 = 27.5km
Time = ?
Speed = 3 1/5 = 3.2 km/h
We know,
Speed = Distance/Time taken
therefore,
3.2 = 27.5/T
3.2T = 27.5
T = 27.5/3.2
T = 8.59375 hours
HOPE IT MAY HELP❤️.