8. Uma had 6 times as many white beads as red beads. For every 5 white beads she used to make a necklace, she used 3 red beads. When she used up all the red beads, she had 52 white beads left. How many red beads did she have? [3]
<--------- 52 --------->
W [][][][][][][][][][][][][][][][][][]
R [][][]
13 u -- > 52
1 u -- > 52 ÷ 13 = 4
3 u -- > 3 x 4 = 12 red beads
She had 12 red beads.
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