Twenty stamps cost $8.40. How much does it cost to buy 5 stamps? Answers: A. $2.10 B. $11.90 C. $4.20 D. $42.00
5 stamps will cost $2.10
if twenty stamps cost 8.40, we want to find out how many five stamps cost.
20 ÷ 5 = 4
we can use this to calculate ->
8.40 ÷ 4 = 2.10, which is the price for those five stamps :)