Is a water clock more accurate than a sand clock? Explain your answer.

Rahul's family went on a trip from New Delhi to Agra by car. The distance between the cities is $210 \mathrm{km}$. After travelling for $1.5 \mathrm{h}$, they stopped for a snack for $0.5 \mathrm{h}$. After reaching Agra, they took a break for $1 \mathrm{h}$ to have lunch and left for sightseeing at $2.00 \mathrm{pm}$. They later returned to the hotel at a certain time. They immediately left for New Delhi and drove back without stopping anywhere. They got home at exactly $10 \mathrm{pm}$.

If the average speed of the car was $70 \mathrm{km}/\mathrm{h}$ on both trips to and from Agra, at what time in the morning did Rahul's family start from Delhi?

Rahul's family went on a trip from New Delhi to Agra by car. The distance between the cities is $210 \mathrm{km}$. After travelling for $1.5 \mathrm{h}$, they stopped for a snack for $0.5 \mathrm{h}$. After reaching Agra, they took a break for $1 \mathrm{h}$ to have lunch and left for sightseeing at $2.00 \mathrm{p}.\mathrm{m}$. They later returned to the hotel at a certain time. They immediately left for New Delhi and drove back without stopping anywhere. They got home at exactly $10 \mathrm{p}.\mathrm{m}$. The average speed of the car was $70 \mathrm{km}/\mathrm{h}$ on both trips to and from Agra.

Complete the table.