Yisir designs bracelets. He use between 9 and 15 red and yellow beads in a ratio of 2 reds beads to 5 yellow beads. How many red and yellow beads does he use?

Question

Mathematics

Lyric Jenkins

14 October, 07:06

Yisir designs bracelets. He use between 9 and 15 red and yellow beads in a ratio of 2 reds beads to 5 yellow beads. How many red and yellow beads does he use?

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Answers (1)

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Aisha Durham · Answer 1

If he only uses between 9 and 15, we know the only totals possible: 10, 11, 12, 13, 14.

If the ratio is 2:5 for red:yellow, then if he uses:

1 set it is 2:5 = 7 beads; no since less than 9.

2 sets is 4:10 = 14 beads; yes since between our targets.

3 sets is 6:15 = 21 beads; no since more than 15.