If b = 2.35 + 0.25x and c = 1.75 + 0.40x represent prices per pound, in dollars, of beef (b) and chicken (c), respectively, x weeks after July 1 last summer, what was the price per pound of beef when it was equal to the price per pound of chicken?
A$2.85
B$2.95
C$3.35
D$2.60
Answer & Solution
Correct answer: C. $3.35
Set b = c: 2.35 + 0.25x = 1.75 + 0.40x. So 0.60 = 0.15x, giving x = 4. Then b = 2.35 + 0.25(4) = 2.35 + 1.00 = $3.35.
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