The total amount kate had left is 4.20$ after buying 7 pencils at p cents. Please explain how do I answer this question and find the value of p

each pencil almost costs 83 cents which is the value of p

Step-by-step explanation:

Here most important data that the amount which Kate had before the purchase of pencils is missing.

For our convenience i am assuming Kate had $10 before the purchase of pencil.

Since, after purchase the left with Kate = $4.20

Therefore, amount spend on purchase of pencils = $10-$4.20 = $5.80

In $5.80 Kate purchased 7 pencils

Therefore cost of each pencil p = 5.80/7 = $0.8285 ≅ $0.83

Therefore each pencil almost costs 83 cents which is the value of p

answer: what are the following choices