Math Problem Solving Quiz

Adult tickets cost $8, child tickets $5. If 12 tickets total cost $75, how many adults attended?

• 5

• 6

• 7

A car travels 300km in 4 hours. If it speeds up by 15km/h, how long will a 450km trip take?

• 5h

• 6h

• 7h

Sarah is twice as old as Tom. In 5 years, the sum of their ages will be 55. How old is Tom now?

• 15

• 20

• 25

How many liters of 20% salt solution must be added to 10L of 50% solution to get 30% solution?

• 15L

• 20L

• 25L

If 3 workers complete a job in 8 hours, how long would 5 workers take?

• 4.8h

• 5.2h

• 6h

The product of two consecutive integers is 210. Find the larger integer.

• 14

• 15

• 16

Solve for x: 3x - 7 > 14

• x > 7

• x > 9

• x > 11

Solve: 2x + y = 10 and x - y = 2

• x=4, y=2

• x=3, y=4

• x=2, y=3

If one root of x² - 5x + k = 0 is 2, find k.

• 6

• -6

• 10

A bacteria colony doubles every 3 hours. Starting with 100, how many colonies are there after 12hours?

• 800

• 1600

• 3200