GeminiHeat wrote:
If p pounds of beef cost d dollars, how many cents would k pounds of beef cost after the price had been reduced by c cents per pound?
A. \((\frac{d - cp}{p})k\)
B. \((\frac{d - cp}{100p})k\)
C. \((\frac{d - 100cp}{100p})k\)
D. \((\frac{100d - cp}{p})k\)
E. \((\frac{100d - 100cp}{p})k\)
The price of beef in dollars, per pound, is d/p. In cents, the price per pound is 100d/p. When we reduce the price by c cents per pound, we have:
100d/p - cp/p = (100d - cp)/p
Thus, k pounds costs:
k(100d - cp)/p
Answer: D