4 pencils cost as much as 3 pens. Leon bought a total of 8 pencils and 4 pens and paid the cashier $50. He received $30 in change. Find the cost of a pencil.
+36916 He got 30 dollars in change ....so he spent 20 dollars
4 p = 3n given or 8p = 6n
8 p + 4 n = $ 20 sub in the red equation
6n + 4n = 20
n = 2
then 4p = 3n 4p = 6 p = 1 1/2 dollars
