You can buy 4 pens for $2. How many pens could you buy with $11

Question

please give me the answer

Answer 1

4 for $2 means each cost 2/4 = $.50 = 50 cents

for $11 you can buy 22

just multiply the dollar amount by 2 to get the number you can buy

4/2 = 22/11

2/4 = 11/22 = 1/2 dollar per pen = 50 cents each