AlgebraEasy–MediumGreatest integer under a limit
Algebra practice question
A box can hold at most 42 kilograms. Each brick weighs 3.5 kilograms. What is the greatest number of bricks the box can hold?
Answer: 12
3.5n ≤ 42 gives n ≤ 12. So 12 bricks.
Common wrong answers
- If you answered 13
- 13 bricks weigh 45.5 kg, over the limit.
- If you answered 14
- 14 comes from 42 ÷ 3, misreading the brick weight.
- If you answered 147
- 147 multiplies 42 by 3.5 instead of dividing.
More Algebra questions
- Easy–Medium
A line passes through the points (0, 3) and (2, 7). What is the slope of the line? - Easy–Medium
A gym charges a $25 one-time signup fee plus $15 per month. Which equation gives the total cost C, in dollars,… - Easy–Medium
If 5(x − 2) = 3x + 4, what is the value of x? - Easy–Medium
A taxi charges a $3.50 base fare plus $2.25 per mile. If a ride costs $19.25 total, how many miles was the rid… - Easy–Medium
The equation of a line is 3x + 2y = 12. What is the y-coordinate of the point where the line crosses the y-axi… - Easy–Medium
A line in the xy-plane passes through the points (1, 5) and (4, 11). What is the y-intercept of the line?
Not affiliated with the College Board. SAT is a trademark of the College Board.