AlgebraHardNumber from fractional parts summing to a value
Algebra practice question
One third of a number plus one half of the same number equals 25. What is the number?
Answer: 30
n/3 + n/2 = 5n/6 = 25, so n = 30.
Common wrong answers
- If you answered 75
- 75 multiplies 25 by 3 only.
- If you answered 12.5
- 12.5 divides 25 by 2 only.
- If you answered 20.83
- 20.83 uses 6n/5 = 25.
More Algebra questions
- Hard
For how many integer values of x is −2 < (x − 5)/3 ≤ 1 true? - Hard
The system 2x + 3y = 6 and 4x + 6y = k has infinitely many solutions. What is the value of k? - Hard
Which of the following is the complete solution set to |x − 4| < 6? - Hard
A student has $40 to spend on notebooks costing $4 each and pens costing $2 each, and wants at least 12 items … - Hard
What is the least whole number of minutes of international calling in a month for which the total monthly cost… - Hard
How many liters of the 30% acid solution did the technician use?
Not affiliated with the College Board. SAT is a trademark of the College Board.