Question a-scie
A science teacher is preparing the 5 stations of a science laboratory. Each station will have either Experiment A materials or Experiment B materials, but not both. Experiment A requires 6 teaspoons of salt, and Experiment B requires 4 teaspoons of salt. If x is the number of stations that will be set up for Experiment A and the remaining stations will be set up for Experiment B, which of the following expressions represents the total number of teaspoons of salt required?
A science teacher is preparing the 5 stations of a science laboratory. Each station will have
Hard-difficulty · SAT Math · Linear Equations in One Variable — Word problems → single variable. Read the question above, select your answer, and check the full explanation below to understand exactly why the correct choice works.
Answer explanation
Choice C is correct. It is given that x represents the number of stations that will be set up for Experiment A and that there will be 5 stations total, so it follows that 5 – x is the number of stations that will be set up for Experiment B. It is also given that Experiment A requires 6 teaspoons of salt and that Experiment B requires 4 teaspoons of salt, so the total number of teaspoons of salt required is 6x + 4(5 – x), which simplifies to 2x + 20.
Choices A, B, and D are incorrect and may be the result of not understanding the description of the context.
More Linear Equations in One Variable practice questions
- What value of p satisfies the equation 5 p + 180 = 250 ?
- Blood volume, , in a human can be determined using the equation , where
- On the first day of a semester, a film club has 90 members. Each
- x + 40 = 95 What value of x is the solution to the
- If 2 ( 3 t - 10 ) + t = 40 + 4
- v = - w 150 x The given equation relates the distinct positive numbers
- If 4 x - 28 = - 24 , what is the value of
- 1 4 x + 5 - 1 3 x + 5 = - 7
Browse all Heart of Algebra practice questions or return to the full SAT question bank.