Question

& Two towns. I and Yare 45 km apart. A cyclist left X at 12 00 and travelled towards Y at an average speed of 10 km h. After one hour. he had a rest for 15 minutes. He then continued towards Y at the same speed. At 12 15. a motorist left Y and travelled towards X at an average speed of 20 km/h until he met the cyclist. They stopped together for a 15-minute rest , after which the motorist continued his journey to X at 30 km/h and the cyclist continued his journey to Y at 15 km/h. By drawing a distance-time graph, find 13] in the time at which the travellers met, 111​

Answer 1

Answer:

A cyclist travels from a place A to a place B along the same route at a uniform speed on different days. The following table gives the speed of his travel and the corresponding time he took to cover the distance.

Speed in km/hr

x 2 4 6 10 12

Time in hrs

y 60 30 20 12 10

Draw the speed-time graph and use it to find

(i) the number of hours he will take if he travels at a speed of 5km/hr

(ii) the speed with which he should travel if he has to cover the distance in 40 hrs.