Tessa walks her dog for 47 minutes .jeremiah walks his dog for 30 minutes .how many more minutes does tessa walk her dog than jeremiah?

Sherrie is baking a pie for her family. she leaves the room and comes back to 35% of the pie having been eaten before she can put the topping on. how much 1 square inch strips of dough will she need for the top, now that a portion is missing? round your answer to the nearest while nimber.