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musickatia [10]
3 years ago
13

Ayako spent $7.80 on equal weights of beads of white and red beads. The red beads cost twice as much per punce as the white bead

s. How much did Ayako spend on each colour of beads?
Mathematics
2 answers:
Over [174]3 years ago
8 0

$2.60 on white beads and $5.20 on red beads

DENIUS [597]3 years ago
7 0
Ok so
red+white=7.8
r+w=7.8

red=2 times cost of white
r=2w
therefor subsitute 2w for r
2w+w=7.8
3w=7.8
divid both isdes by 3
w=2.6
subsitute
r=2w
r=2(2.6)
r=5.2


$2.60 for white
$5.20 for red

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