Problema Solution
A student moves into a bigger apartment that rents $400 per month. that rent is $100 less than twice what she had been paying. find her former rent.
Answer provided by our tutors
let 'x' represent her former rent, then '2x-100' represents her current rent
400 = 2x-100
500 = 2x
x = 500/2 = 250
her former rent was $250 per month