Since she spends $20 of the $125 she makes a month, she really ends up with $105 a month.
Write an equation using 'm' to represents months. It will be the money earned a month times the number of months, and this will equal how much she needs ($800)
105m=800
To find how many months, divide each side by 105
m equals about 7.62
Since you aren't going to have just .62 of a month, you need to round. Since it is above .5, you round up to 8 months.
steps: divide, multiply, subtract, and bring down.
Step 1. Calculate how many times the number outside the division bar goes into the first number inside the bar. Step 2. Put the answer on top of the bar. Step 3. Multiply the number outside the division bar by the number at the top of the bar.
