Quantitative Problem Solving Assessment Flashcards

What number comes next in the sequence: 2, 6, 12, 20, 30, ?

Answer: 42

Differences increase by 2 each step (4,6,8,10,12), so 30 + 12 = 42.

If 5 machines make 5 widgets in 5 minutes, how long do 100 machines take to make 100 widgets?

Answer: 5 minutes

Each machine makes one widget in 5 minutes, so 100 machines make 100 widgets in 5 minutes.

A shirt costs $40 after a 20% discount. What was the original price?

Answer: $50

$40 is 80% of the original, so the original is 40 / 0.8 = $50.

Which number is the odd one out: 8, 27, 64, 100, 125?

Answer: 100

All are perfect cubes (2³,3³,4³,5³) except 100, which is a perfect square.

If the average of five numbers is 20, and four of them are 18, 22, 25, and 15, what is the fifth?

Answer: 20

The total must be 100; 18+22+25+15 = 80, so the fifth number is 20.

A clock shows 3:15. What is the angle between the hour and minute hands?

Answer: 7.5 degrees

The hour hand moves 7.5° past the 3 in 15 minutes while the minute hand sits exactly on the 3.

What is 15% of 80, plus 25% of 40?

Answer: 22

15% of 80 is 12 and 25% of 40 is 10, totaling 22.