Question

A necklace calls for red, blue and white beads in the ratio of 5: 8:12. Ming has used

350 beads, how many of them are white in colour?

Answer 1

168

Explanation:

• find unity

350 : (5 + 8 + 12) =

350 : 25 = 14

• multiply the units by the white ratio

14 * 12 = 168