Question

A pen cost 4 cedis less than a marker . Lisa buys 8 pens and 3 markers and paid 23 cedis in all. find the cost of each item​

Answer 1

Resposta:

pen = 1, marker = 5

Explicação passo-a-passo:

p = m - 4

8p + 3m = 23

8(m - 4) + 3m = 23

8m - 32 + 3m = 23

11m = 23 + 32

11m = 55

m = 55/11

m = 5

p = 5 - 4

p = 1