Coin Problems
Probability
Average
Percent
Factor
100
The little jar of nickels and dimes contained $20. If 300 coins were in the jar, how many of each kind were there?
What is... number dimes = 100 and number of nickels = 200
100
An urn contains 10 red marbles and 9 black marbles. Lloyd choose one marble randomly and then another marble randomly. What is the probability that he picks two black marbles if he replaces the first marble?
What is 81/361
100
The sum of four numbers is 346.8. Two of the numbers are 95.2 and 190.8. Find the average of the four numbers.
What is 86.7
100
The salesperson reduced the price by 15 percent to sell the car for $6800. What was the car's original price?
What is $8000
100
x squared = 49
What is x = -7 and x = 7
200
The big jar of nickels and dimes contains $40. If 600 coins were in the jar, how many of each kind were there?
What is number of dimes = 200 and number of nickels = 400
200
An urn contains 10 red marbles and 9 black marbles. Lloyd chooses one marble randomly and then another marble randomly. What is the probability that he picks two black marbles if he does not replace the first marble?
What is 4/19
200
The sum of four numbers is 426.8. two of the numbers are 84.6 and 201.2. Find the average of the four numbers.
What is 106.7
200
The salesperson reduced the price by 12 percent to sell the car for $7920. What was the car's original price?
What is $9000
200
x squared - 66 = -5x
What is x = 6 and x = -11
300
Ming has $4.45 in quarters and dimes. She has 8 more quarters than dimes. How many coins of each type does she have?
What is number of quarters = 15 and number of dimes = 7
300
An urn contains 8 blue marbles and 9 green marbles. Steve chooses one marble randomly and then another marble randomly. What is the probability that he picks two green marbles if he replaces the first marble?
What is 81/289
300
The basketball team practiced free throws for ten minutes. The number of successful free throws per team member were as follows: 23, 20, 28, 17, 32, 21, 24, 32, 30, 23. Determine the range, median, mode, and the mean of the numbers listed.
What is range = 15, median = 23.5, mode = 23, 32, and mean = 25
300
Beau and Christy hide 600 raisins. This is 60 percent more than they hid last month. How many raisins did they hide last month?
What is 375 raisins.
300
2xyz squared - 4xyz + 2xy
What is 2xy(z -1)(z - 1)
400
Orlando had a hoard of 22 nickels and dimes whose value was $1.35. How many coins of each type did he have?
What is number of dimes = 5 and number of nickels = 17
400
An urn contains 8 blue marbles and 9 green marbles. Steve chooses one marble randomly and then another marble randomly. What is the probability that he picks two green marbles if he does not replace the first marble?
What is 9/34
400
The basketball team practiced free throws for 20 minutes. The number of successful free throws per tea member were as follows: 20, 19, 26, 15, 23, 29, 19, 22, 29, 28. Determine the range, median, mode, and mean of the numbers listed.
What is range = 14, median = 22.5, mode = 19 & 29, and mean = 23
400
Meme and Jim have 75 thingamabobs. They want to give Hall 20 percent of them. How many thingamabobs do they give Hal?
What is 15 thingamabobs.
400
3abc squared - 6abc + 3ab
What is 3ab(c - 1)(c - 1)
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