Question

A tourist ignores the warning signs and leaves food in his car while he goes for a hike. A mama bear and her cub open the car door in six seconds. How long would it take each bear to open the car door alone if the cub needs 9 more seconds than the mama bear?

Answer 1

The mama bear can do it in 9

seconds. The cub can do it in 18

seconds.

Explanation:

1/x+9+1/x=1/6