Sheela started to school at half past 8. Her school was 7 and half hours including breaks. Her travel time from school to home is 20 minutes. If she reached home at evening 4:50 pm what time did she start from school?

Question

$\begin{array}{11} (a)\; \text{half past four} \\ (b)\; \text{half past five} \\ (c)\; \text{quarter to four} \\ (d)\; \text{quarter to five} \end{array}$