Sarawong spent 15 dollar's on fancy pens how nuch each pen costs

Answer 1

$15 on x fancy pens

each fancy pen cost $15/x

if 5 fancy pens, then each cost 15/5 = $3

if 10 fancy pens, then each cost 15/10 = $1.50

if 15 fancy pens each cost 15/15 = $1.00