Question

Se stie ca 8 pixuri costa cat 3 stilouri, iar 16 pixuri si 5 stilouri costa 88 lei.Care este pretul fiecarui obiect ?

Answer 1

$8p = 3s$

$p = \frac{3s}{8}$

$16p + 5s = 88$

$16 \times \frac{3s}{8} + 5s = 88$

$2 \times 3s + 5s = 88$

$6s + 5s = 88$

$11s = 88 \: | \div 11$

$s = 8 \: lei$

$p = \frac{3s}{8}$

$p = \frac{3 \times 8}{8}$

$p = 3 \: lei$