Question
Mary had 3 times as many stamps as pens. After she used 80 stamps and 20 pens, there were twice as many pens as stamps.
  1. How many stamps did Mary have in the end?
  2. How many pens did Mary have at first?
4 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

Mary had 3 times as many stamps as pens. After she used 80 stamps and 20 pens, there were twice as many pens as stamps.
  1. How many stamps did Mary have in the end?
  2. How many pens did Mary have at first?