What is the greatest common factor of 30 and 120

7friends share 4 pizzas equally how much pizza did each friend get

If a baby uses 15 diapers in 2 days how many diapers will the baby use in a year

You have $600,000 saved for retirement. your account earns 5.5% interest. how much, to the nearest dollar, will you be able to pull out each month, if you want to be able to take withdrawals for 20 years?