AlgebraEasyCrates in a lift
Algebra practice question
A lift can carry at most 600 kilograms. Each crate loaded into it weighs 40 kilograms. Which inequality gives the possible numbers of crates n the lift can carry at once?
- A. 40n ≤ 600Correct
- B. 40n ≥ 600
- C. n ≤ 600 − 40
- D. 40 + n ≤ 600
Answer: A. 40n ≤ 600
n crates weigh 40n, which must not exceed 600.
Why the other answers are wrong
- B. 40n ≥ 600
- This requires the load to be at least 600.
- C. n ≤ 600 − 40
- This subtracts one crate's weight from the limit.
- D. 40 + n ≤ 600
- This adds one crate's weight to the count.
More Algebra questions
- Easy
If 3x + 7 = 22, what is the value of x? - Easy
If x/4 = 9, what is the value of x? - Easy
The function f is defined by f(x) = 6x − 5. What is the value of f(3)? - Easy
The perimeter P of a rectangle with length l and width w is given by P = 2l + 2w. Which of the following expre… - Easy
Which equation defines the function f? - Easy
In the xy-plane, the graph of the equation y = 4x − 12 crosses the x-axis at the point (a, 0). What is the val…
Not affiliated with the College Board. SAT is a trademark of the College Board.