math problem help please

Question

Cameron bought a cup for 25,50 and some pens for 2.50 each.the total price for everything was 55.50.how many pens did he buy

Answer 1

2,550/2.5 = 1020

2550/2.5 = 25500/25 = 4(25500)/100= 4(255) = 1,020 pens

just divide total price by price per unit.

use a handheld calculator or on line calculator

assuming 2550 means $2,550 total cost

that comma is confusing though,

suggesting maybe $25,500 instead of $2,550'

then

the price per unit is

25500.2.5 = 10.200 pens