GMAT Quantitative Reasoning Practice Set 5

In a perceived game of luck three bulbs, red, green and yellow, flash every 12 seconds, 18 seconds and 60 seconds. The participant is required to predict when the three bulbs will flash together in HH:MM:SS format. The last time the three bulbs flashed together was at 18:30:00 Hrs. When will the three bulbs flash together again next time?

When fully evaluated, what digit is in the ones place value for the following expression?

5¹¹ – 8⁶ – 3⁵

A school administrator is organizing a field trip for 380 students. She decides that the ratio of students to chaperones needs to be 4:1. The charter bus company states that each bus can accommodate 64 individuals. How many buses are needed?

A 2 inch cube is filled with water. When a marble is placed inside the water it displaces approximately 0.065in³ of water. Which of the following is closest to how much more water, in cubic inches, would be displaced if the marble had twice the diameter?

If (3/(x-4)) = (6/(-y)), which of the following shows the relationship of y in terms of a?

Consider quadrilateral ABDF. What is the area of quadrilateral ABCE, in square units?

A bag contains red, yellow, blue, and black marbles. There are 80% more yellow than red. The ratio of yellow to blue is three to five. There are ⅓ less black marbles than blue. What is the ratio of red to black marbles?

If X is the set of all positive integers that are multiples of 3 ≤ 169, and R is the set of all positive perfect squares ≤ 150, what is the relationship of {9, 36, 81, 144}?

Solution X is made of two ingredients, d and g, and has a ratio of 1:3. Solution Y is made of two ingredients, g and f, and has a ration of 3:2. Solution Z is made of Solution X and Y with a ratio of 4:11. If you make 40 ounces of solution Z, what percent of it will be ingredient g?

ABC is an equilateral triangle. ∠CAD=∠BAD+6. What is m∠ADB?