The cost of a ruler cost if a pencil cost $8 is $12
Equation
There are three basic types of equation in mathematics. Namely:
- Linear equations
- Quadratic equations
- Simultaneous equations
let
- cost of ruler = r
- cost of pencil, p = $8
4r + p
2r + 4p
4r + p = 2r + 4p
4r + 8 = 2r + 4(8)
4r + 8 = 2r + 32
4r - 2r = 32 - 8
2r = 24
r = 24/2
r = $12
Therefore, the cost of a ruler cost if a pencil cost $8 is $12
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