Timework21
Refer to the data below and answer the questions that follow.
The variation in the speed of a car on a particular day at the respective times is shown in the table below:
| s(km/hr) | 0 | 40 | 50 | 85 | 10 | 10 |
| t(hr) | 11.00 am | 11.30 am | 1.00 pm | 1.30 pm | 3.30 pm | 4.30 pm |
0. Average speed of the car from 11.00 a.m. to 4.30 p.m. is:
- Option : C
- Explanation :
Distance travelled from 1.00 pm to 4.30 p.m.
= A(ΔBQRY) + A(ΔBYC) + A(ΔCZD) + A(ΔZRTE)
= 130 + 8.75
= 138.75 km.
Total distance travelled = 77.5 + 138.75
= 216.25 km.
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