If a scooterist drives at the rate of 24 km/hr from his home, he reaches his work
place 5 minutes late. But if he drives at the rate of 30 km/hr, he reaches his work
place 4 minutes early.
(a) Find the distance of his work place from his home.
(b) is it advisable to drive at high speed? Give reason.
Please Tell it's very urgent.
Answers
Answered by
1
ANSWER
Let his destination be xkmphr
If he drives at the rate of 24kmphr, time taken by him=
speed
distance
=
24
x
Correct time=
24
x
−
60
5
......(1)
If he drives at the rate of 30kmphr, time taken by him=
30
x
Correct time=
30
x
+
60
4
......(2)
From (1) and (2)
24
x
−
60
5
=
30
x
+
60
4
⇒
24
x
−
30
x
=
60
4
+
60
5
⇒
120
5x−4x
=
60
9
⇒x=
20
3
×120
∴x=18
Hence, the destination is 18kmphr
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