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A boat must carry aluminum pieces for a construction project that weigh, in total, no more than 50,000 kilograms 
(kg). Each aluminum piece is either a beam, which weighs 
100kg, or a connector plate, which weighs 
2kg. If the boat is carrying the maximum weight of aluminum pieces, which of the following gives the number of beams, 
b(c), as a function of the number of connector plates, 
c ?
Choose 1 answer:
(A) 
b(c)=500-0.02 c
(B) 
b(c)=25,000-50 c
(C) 
b(c)=50,000-100 c
(D) 
b(c)=50,000-2c

A boat must carry aluminum pieces for a construction project that weigh, in total, no more than 50,00050,000 kilograms (kg). Each aluminum piece is either a beam, which weighs 100kg100\text{kg}, or a connector plate, which weighs 2kg2\text{kg}. If the boat is carrying the maximum weight of aluminum pieces, which of the following gives the number of beams, b(c)b(c), as a function of the number of connector plates, cc?\newlineChoose 11 answer:\newline(A) b(c)=5000.02cb(c)=500-0.02c\newline(B) b(c)=25,00050cb(c)=25,000-50c\newline(C) b(c)=50,000100cb(c)=50,000-100c\newline(D) b(c)=50,0002cb(c)=50,000-2c

Full solution

Q. A boat must carry aluminum pieces for a construction project that weigh, in total, no more than 50,00050,000 kilograms (kg). Each aluminum piece is either a beam, which weighs 100kg100\text{kg}, or a connector plate, which weighs 2kg2\text{kg}. If the boat is carrying the maximum weight of aluminum pieces, which of the following gives the number of beams, b(c)b(c), as a function of the number of connector plates, cc?\newlineChoose 11 answer:\newline(A) b(c)=5000.02cb(c)=500-0.02c\newline(B) b(c)=25,00050cb(c)=25,000-50c\newline(C) b(c)=50,000100cb(c)=50,000-100c\newline(D) b(c)=50,0002cb(c)=50,000-2c
  1. Understand the problem: Understand the problem.\newlineWe need to find a function b(c)b(c) that gives the number of beams in terms of the number of connector plates, given that the total weight of the aluminum pieces carried by the boat cannot exceed 50,00050,000 kg. Each beam weighs 100100 kg and each connector plate weighs 22 kg.
  2. Set up the equation: Set up the equation for the total weight.\newlineLet bb be the number of beams and cc be the number of connector plates. The total weight of the beams and connector plates cannot exceed 50,00050,000 kg. This can be expressed as:\newline100b+2c50,000100b + 2c \leq 50,000
  3. Solve for b: Solve for b in terms of c.\newlineTo find b(c)b(c), we need to express bb as a function of cc. We can rearrange the equation to solve for bb:\newline100b=50,0002c100b = 50,000 - 2c\newlineb=(50,0002c)/100b = (50,000 - 2c) / 100\newlineb=5000.02cb = 500 - 0.02c
  4. Match the function: Match the function b(c)b(c) with the given options.\newlineThe function we derived is b(c)=5000.02cb(c) = 500 - 0.02c. This matches with option (A).