
Algebra and Probability Problems
Interactive Video
•
Mathematics, Chemistry
•
7th - 10th Grade
•
Practice Problem
•
Hard
Olivia Brooks
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If a pool is filled at a constant rate and takes 8 hours to fill 3/5 of its capacity, how much longer will it take to fill the remaining 2/5?
6 hours
5 hours and 20 minutes
4 hours and 30 minutes
7 hours
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If a pool is filled at a rate of 3/40 pools per hour, how long does it take to fill the entire pool?
15 hours
10 hours
13 hours and 20 minutes
12 hours
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A positive number x is multiplied by 2 and then divided by 3. If the square root of the result equals x, what is the value of x?
2/3
3/4
1/3
1/2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the equation 2x/3 = x^2, what is the value of x if x is positive?
1/3
3/4
1/4
2/3
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A tank contains 10,000 gallons of a 5% sodium chloride solution. After 2,500 gallons of water evaporate, what is the new concentration of sodium chloride?
8%
7.5%
6.67%
5.5%
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
After 2,500 gallons of water evaporate from a 10,000-gallon tank of 5% sodium chloride solution, what is the remaining volume of the solution?
5,000 gallons
6,500 gallons
7,500 gallons
8,000 gallons
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If x + 5y = 16 and x = -3y, what is the value of y?
8
6
4
10
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