Caitlyn works part time job at the bookstore which pays $55 a week she has already saved $120 towards the purchase of a new $450 iPad how many weeks must she work in order to have more than the amount of money to buy the iPad

Respuesta :

called the amount of weeks she need to work is x

we have

120 + 55x = 450

<=> 55x = 330

<=> x = 6