Peter spends $450 on groceries in 3 months.
if peter spends the same amount every month, what is the amount he spends every month?

When george started his current job, his employer told him that at the end of the first year, he would receive two vacation days. after each year worked, his number of vacation days will double up to five work weeks (25days) of payed vacation. how many vacation days will he have in 4 years