let number of weeks be w
solve
10w + 55 = 15w + 20
take it from there
Suppose you have $55 in your account. You start saving $10 each week. Your friend has $20 in her account and is saving $15 each week.
A) When will you and your friend have the same amount of money in your accounts?
B) How much money will each of you have?
2 answers
10w+55=15w+20
-10w -10w
55=5w+20
-20 -20
35=5w
/5 /5
7=w
-10w -10w
55=5w+20
-20 -20
35=5w
/5 /5
7=w
3 answers