Quote:
Jack purchased 8 apples, 5pers, and 6 oranges for $8.70
Cindy 10 apples, 4 pears, and 3 oranges for $7.95
Sarah 5 apples,7 pears, and 8 oranges for $8.90
8A+5P + 6O = 8.7 --- I
10A + 4P + 3O = 7.95 ----II
5A + 7P + 8O = 8.9----- III
Multiplying III with 2 and subtracting from II, to eliminate A
10P + 13O = 9.85 --- IV
Multiplying I by 5, III by 8 and then subtracting them, to eliminate A
31P + 34O = 27.6 ---- V
Multiplying IV by 31, V by 10 and then subtracting them, to eliminate P
O = 0.46
P = 0.38
A = 0.58
A,B,D
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