Answer:
Katie saved $35 last month.
Step-by-step explanation:
we are given that, Katie wants to buy a bicycle that costs $129.
This is $24 more than 3 times what katie saved last month.
Let Katie, saved $x last month.
So we can write
[tex]3x+24=129\\\text{Add-24 on both the sides}\\3x+24-24=129-24\\3x=105\\\text{Divide both the sides by 3, we get}\\x=35\\\text{So she saved last month }$35.[/tex]
