Question #34bd4

1 Answer
Nov 15, 2017

Solve using SoE

Explanation:

Note: (I'm going to use the USD($) sign because I don't know where the pound sign is)

I. Start by finding the equation:
A man bought a certain amount of each stamp.
So he bought...
a $1 , b$4, and c$12 stamps.

He spent $100.
So...
1a + 4b + 12c = 100 (Equation 1)

He bought 40 stamps
So...
a+b+c=40 (Equation 2)

Solve using System of Equations.