Ruby is making friendship bracelets. She has a total of 156 beads to make bracelets for 12 friends. If she uses all of the beads, what is the unit rate of beads per bracelet?

Question

15 beads

10 beads

12 beads

13 beads

Answer 1

To find the unit rate of beads per bracelet, you need to divide the total number of beads by the number of friends (or bracelets).

Ruby has 156 beads and 12 friends, so the calculation is:

\[ \text{Beads per bracelet} = \frac{156 \text{ beads}}{12 \text{ friends}} = 13 \text{ beads per bracelet} \]

Thus, the unit rate of beads per bracelet is 13 beads.