Multiple Choice Question: After M students took the test, there was a total of 64% of correct answers. If the test contains 50 questions, what is the least number of questions that the next student have to get right to bring the total of correct answers to 70%?

After M students took the test, there was a total of 64% of correct answers. If the test contains 50 questions, what is the least number of questions that the next student have to get right to bring the total of correct answers to 70%?

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More Old MCQ

Orphaned Multiple Choice Questions (MCQ) due to changes of exam system.

Find the product of roots of $\dfrac{x^{2002} + 4x^{2001}}{4x^{2000}} = 8$.
Two vertices of a rectangle are on the positive x-axis. The other two vertices are on the lines y = 4x and y = 6 - 5x. What is the maximum possible area of the rectangle?
A line with equation ax + by = 3 passes through (6, 3) and (-1, -1). Find a and b without finding the slope.
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A person buys a piece of property for P100,000 down payment and ten deferred semi-annual payments of P8,000 each starting three years from now.
Solve for x: x - 1 / x = 0.
Is x - 2 a factor of x^3 - 3x^2 + 7x - 10?
A student in a chemistry laboratory wants to form a 32-milliliter mixture of two solutions to contain 30% acid. Solution A contains 42% acid and solution B contains 18% acid. How many milliliters of each solution must be used?
If $a$ and $b$ are integers, then $a+b$ is also an integer. This is true by which of the following properties?
A company’s daily profit P in pesos, is given by the equation P = -2x^2 + 120x - 800
A highway has a gradient of 0.087. How many meters would an automobile rise vertically if it traveled 2 miles along the way?
In a family of five children, what is the chance that there are three boys and two girls?
A circle with radius 6 has half its area removed by cutting off a border of uniform width. Find the width of the border.
A decagon has how many diagonals?
Which of the following is equal to $\dfrac{\sin \theta}{1 + \cos \theta}$.

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