Question

8. Teo makes a necklace of x wooden beads at $0.50

each and 6 glass beads at $1.25 each. The average
cost of the beads in the necklace is $0.75. Write
an equation to model the situation.

Answer 1

0.5x + 7.5 / (x + 6)

Explanation:

Let x be the number of wooden beads

wooden bead = $0.50 each

glass bead = $1.25 each

since average cost of bead = (cost of wooden bead + cost of glass bead)/ total number of beads

equation is (0.5x + (6*1.25))/(x + 6)

The model equation is therefore 0.5x + 7.5 / (x + 6)