The school store sells markers for $0.25 each and pencils for 0.50 each. Anthony spent $ 5.50 to buy a total of 16 markers and pencils. How many markers did Anthony buy?

The answer to your question is Antony bought 5 pens

Step-by-step explanation:

pens = p = $0.35

pencils = n = $0.15

total amount = 12

total money spent = $2.80

Process

1.- Write equations

              p  +  n  = 12                 (l)

       0.35p  +  0.15n = 2.80      (ll)

2.- Solve the system of equations by elimination

Multiply equation l by - 0.35

        - 0.35p - 0.35n = -4.2

          0.35p + 0.15 n = 2.8

             0      - 0.2n = -1.4

Solve for n

                        n = -1.4 / -0.2

                        n = 7      He bought 7 pencils

3.- Find the value of p

             p + 7 = 12

             p = 12 - 7

             p = 5                He bought 5 pens

in simplified version   it would be x ≤-4

step-by-step explanation:

multiply each term in x ≤-4 by -1