Question

James has $360 in his savings account. If he decides to save $90 every month, which of these best describes how many months it will take for him to have more than 810 in his savings account?

Answer 1

This problem can be easily solved using algebra.
Since James wants to know how many months he will have $810, we need to simplify it in an equation.
Let x = number of months
$360 + $90x = $810
We transfer $360 to the other side and reverse operation
$90x = $810 - $360
Now it is simplified to this
$90x = $450
n order to find the value of x, we divide 90 to both sides
$90x/90 = $450/90
…and arrive at the answer.
X = 5
Therefore, it will take 5 months for James to save in order to get $810 in his bank account.