Question

Beth's summer vacation lasted 87 days. At the beginning of her vacation, she spent 3 weeks at soccer camp, 5 days at her grandmother's house, and 13 days visiting Glacier National Park with her parents. How many vacation days remained?

Answer 1

Beth has days of vacation.

She spent :
* 3 weeks = 3*7 days = 21 days at soccer camp
* 5 days at her grandmother's house
* 13 days visiting the Park

That makes 21+5+13=39 days.

She thus has 87-39=48 days remaining.

Answer 2

so 1 week=7 days
3 weeks=7 times 3=21 days


5 and 13
so 87-21-5-13=days left=48 days