Question
In a shop, 4 pens and 5 files cost $17.70. Joseph bought 5 pens and 6 files at $21.60 from the book shop.
  1. Find the cost of 1 pen and 1 file.
  2. What was the cost of 1 file?
4 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

In a shop, 4 pens and 5 files cost $17.70. Joseph bought 5 pens and 6 files at $21.60 from the book shop.
  1. Find the cost of 1 pen and 1 file.
  2. What was the cost of 1 file?