Free Practice Question
PS · Problem Solving
705-805
Algebra
While multiplying four real numbers, John took one of the numbers as 62 instead of 26. As a result, the product went up by 720. Then the minimum possible value of the sum of cubes of the other three numbers is
Answer Choices
Correct answer marked belowA
40
B
50
60
Correct
D
70
E
80
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Explanation
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Sign in to commentWhat this question tests
What it tests
Your ability to manipulate linear and quadratic expressions, substitute unknowns, and solve equations under time pressure.
Common trap
Losing a sign when moving terms across the equals sign, or dividing both sides by a variable that could equal zero.
Details
Difficulty
705-805
Type
PS
Category