Ratios, Proportions and Percentage
Probability
Statistics
Equations
Problem Solving
100
The value of x in the following proportion:
3/7=29/(5x-4)
What is approximately 14.33
100
The spinner is spun twice, what is the probability of spinning a sum that is greater than 10?
What is
21/64 or 32.81%
100
What is the mode of the following distribution:
11, 12, 12, 12, 14, 14, 14,14,15
What is 14
100
The value of x in the following equation is....
-3(4x-8)=-36
What is x=5
100
Lyla and Greta order eggs for $5.80, pancakes for $4.10, and 2 mugs of cocoa for $0.55 each. The tax is $0.90. How much change should they get from $15.00?
What is $3.10
200
The value of r in the following proportion:
r/4=(r-22)/7
What is
-22/3
200
If a spinner is spun twice and the results are recorded, what is the probability of spinning 2 prime numbers?
What is
16/25 or 64%
200
What is the median of the following distribution:
29, 30, 16, 25, 25, 25, 32, 40, 48
What is 29
200
The value of x in the following equation is...
6(6x+6)-5=1+6x
What is x=-1
200
There are 11 students in the third grade and twice that number in the fourth grade. There are 13 boys and 12 girls in the second grade. How many students are in grades 2 through 4 altogether?
What is 58
300
35% of 48?
What is 16.8
300
A die is rolled once, what is the probability of rolling divisors of 20?
What is
2/3
300
What is the difference between the mean and the median of the following distribution:
51, 35, 38, 36, 40, 42, 50, 47, 49
What is approximately 1.11
300
The value of x in the following equation is...
-10x+3(8+8x)=-6(x-4)
What is x=0
300
The sum of two numbers is 361 and the difference between the two numbers is 173. What are the two numbers?
What is 267 and 94
400
Benny receives a $76 000 salary for working as an executive. If Benny spends 25% of his salary on food each year, and 32% of the rest on rent, how much does he have left-over?
What is $38 760
400
A jar contains ten black buttons and six yellow buttons. If 2 buttons are picked at random (and without replacement), what is the probability that exactly 2 of them are black?
What is
9/24 or 37.5%
400
What is the ratio of the mean and median of the following distribution:
12, 12, 15, 16, 18, 19, 20, 21, 21, 21, 34, 40
What is 78:83
400
The value of x in the following equation is...
-3(4x+3)+4(6x+1)=43
What is x=4
400
A family member has some five-dollar bills and one-dollar bills in their wallet. Altogether she has 18 bills and a total of $62. How many of each bill does she have?
What is 11 five-dollar bills and 7 one-dollar bills
500
Nancy decided to look at new and used trucks. Nancy found a new truck for $48 000. She found the same truck but a used model. The used truck goes for 55% of the new truck.
How much money would she save if she bought the used truck instead of the new one?
What is $21 600
500
A six-sided die is rolled twice. What is the probability that the die will show an even number exactly two times?
What is
1/12 or 8.3%
500
What is the sum of 15% of the median and 20% of the range of the following distribution:
78, 78, 79, 80, 82, 82, 82, 84, 86, 88, 90, 92, 98
What is 16.3
500
The value of a in the following equation:
19/4-7/2a=-1/4a+3/2
What is a=1
500
A friend bought 2 boxes of pencils and 8 notebooks for school and it cost him $11. He went back to the store the same day to buy school supplies for his younger brother. He spent $11.25 on 3 boxes of pencils and 5 notebooks. How much would notebooks cost?
What is $0.75