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GMAT Math practice - (5/36 questions - random)

GMAT practice questions. Once you complete the quiz you will see your score and explanation of the correct answer.

The average age of a group of 10 students was 20. The average age increased by 2 years when two new students joined the group. What is the average age of the two new students who joined the group?

	A) 22 years
	B) 30 years
	C) 44 years
	D) 32 years
	E) None of these

For what range of values of 'x' will the inequality 15x -

> 1?

	A) x > 0.4
	B) x < 1/3
	C) -1/3 < x < 0.4, x > 15/2
	D) -1/3 < x < 0, x > 2/5
	E) x < -1/3 and x > 2/5

The basic one-way air fare for a child aged between 3 and 10 years costs half the regular fare for an adult plus a reservation charge that is the same on the child's ticket as on the adult's ticket. One reserved ticket for an adult costs $216 and the cost of a reserved ticket for an adult and a child (aged between 3 and 10) costs $327. What is the basic fare for the journey for an adult?

	A) $ 111
	B) $ 52.5
	C) $ 210
	D) $ 58.5
	E) $ 6

What is the measure of the radius of the circle that circumscribes a triangle whose sides measure 9, 40 and 41?

	A) 6
	B) 4
	C) 24.5
	D) 20.5
	E) 12.5

If the sum of the interior angles of a regular polygon measures up to 1440 degrees, how many sides does the polygon have?

	A) 10 sides
	B) 8 sides
	C) 12 sides
	D) 9 sides
	E) None of these


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