Question

Mindy and Daisy are making necklaces using beads. Mindy uses 4 red beads for every 5 white beads. Daisy uses 6 red beads for every 7 white beads. Use tables of equivalent ratios to determine who will use more white beads when Mindy and Daisy each use 12 red beads.
A.
Daisy will use 13 white beads and Mindy will only use 9 white beads, so Daisy will use more white beads.
B.
Mindy will use 20 white beads and Daisy will only use 13 white beads, so Mindy will use more white beads.
C.
Daisy will use 42 white beads and Mindy will only use 20 white beads, so Daisy will use more white beads.
D.
Mindy will use 15 white beads and Daisy will only use 14 white beads, so Mindy will use more white beads.

Answer 1

Mindy: 4 red → 5 white. Scale to 12 red: 12 ÷ 4 = 3, so 5 × 3 = 15 white.

Daisy: 6 red → 7 white. Scale to 12 red: 12 ÷ 6 = 2, so 7 × 2 = 14 white.

So Mindy uses 15 white beads and Daisy uses 14; Mindy uses more. Answer: D.