Rebecca‘s mom gave her $15 to buy school supplies. Grace needs to buy three mechanical pencils and some notebooks. If each mechanical pencil cost $1.75 and each notebook cost $2.99 how many notebooks and Grace by using only the money or mom gave her.
Grace will spend $5.25 on three mechanical pencils (3 pencils x $1.75 each).
This means Grace has $9.75 left to spend on notebooks.
Grace can buy a total of 3 notebooks with the remaining money (3 notebooks x $2.99 each = $8.97).
So, Grace will buy 3 notebooks and spend a total of $14.22 ($5.25 + $8.97) out of the $15 her mom gave her.