Ex 15.1, 6 A courier-person cycles from a town to a neighboring suburban area to deliver a parcel to a merchant. His distance from a town at different times is shown by the following graph. (a) What is the scale taken for the time axis?
Between any one hour, there are 4 units.
∴ Scale is 4 units = 1 hour
(b) How much time did the person take for the travel?
The person started at 8 a.m.
and reached the destination at 11:30 a.m
Time taken = 11:30 am – 8 am
(c) How far is the place of the merchant from the town?
The courier-person travelled 22 km from the town.
∴ The place of the merchant is 22 km from the town.
(d) Did the person stop on his way? Explain.
Between 10 a.m. & 10:30 a.m,
there is a straight horizontal line in a graph.
It shows that the person did not travel during that time.
∴ Person stopped on his way from 10 a.m. to 10:30 a.m
(e) During which period did he ride fastest?
We have to see between which period the distance travelled is maximum
∴ He rides fastest during 8 a.m. to 9 a.m.

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.

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