Problema Solution
Shanice spent $21 on writing utensils. Pens cost $4 and pencils cost $3. If she bought a total of 6, then how many of each kind did she buy?
Answer provided by our tutors
let
x = the number of pens both
y = the number of pencils both
Shanice spent $21 on writing utensils
4x + 3y = 21
she bought a total of 6
x + y = 6
by solving the system of equations
4x + 3y = 21
x + y = 6
we find
x = 3 pens
y = 3 pencils
click here to see the step by step solution of the system of equations
Shanice bought 3 pens and 3 pencils.