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alice1956alixcetran
alice1956alixcetran alice1956alixcetran
  • 12-03-2016
  • Mathematics
Answered

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 beads. How much did Ayako spend on each colour of beads?

Verified Answer :

Anonymous Anonymous
  • 12-03-2016

$2.60 on white beads and $5.20 on red beads

Answer Link
apologiabiology
apologiabiology apologiabiology
  • 16-03-2016

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

Answer Link

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