Answer:
$3.15
Explanation:
We are given that 3 apples costs $1.35
To find how much 7 apples costs, let's first find out the unit price, or how much 1 apple costs.
You can find this amount by dividing $1.35 by 3.
1.35/3 = 0.45
So, 1 apple costs 0.45 dollars, or 45 cents.
Now, let's find out how much 7 apples cost.
If 1 apple costs 45 cents, then 7 apples cost 45 * 7 = 315 cents or 3.15 dollars.