CAT 2020 Exam Shift 3 Solved Paper

Vimla starts for office every day at 9 am and reaches exactly on time if she drives at her usual speed of $40\mathit{k}\mathit{m}∕\mathit{h}\mathit{r}$. She is late by 6 minutes if she drives at $35\mathit{k}\mathit{m}∕\mathit{h}\mathit{r}$. One day, she covers two-thirds of her distance to office in one-thirds of her usual time to reach office, and then stops for 8 minutes. The speed, in $\mathit{k}\mathit{m}/\mathit{h}\mathit{r}$, at which she should drive the remaining distance to reach office exactly on time is