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12 Cards in this Set
- Front
- Back
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The average weight of six bags of peat is 18 pounds. If five of the bags weigh 15, 37, 16, 9, and 23 pounds, respectively, how much does the sixth bag weigh?
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Ans:8
Total is 6 x 8=108=15+37+16+9+23+ unknown 108= 100+ Unknown |
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Carole needs to buy 5 scarves with $80 from her secret cash stash. If two of the scarves cost $35, what is the average amount of money Carole can spend on the remaining three?
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Ans:$15
$80-$35=$45 This is the amount remaining. Total / Number=Average $45/3=$15 is the average |
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The average weight of three watermelons is 16 pounds. If one watermelon weighs 5 pounds, what is the sum of the weights of the other two?
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Ans:43
The total weight is 3x16=48 48-5=43 |
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The average of 10 numbers is 35. What is the sum of the numbers?
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Ans: 350
Total=Average x number=35 x 10=350 |
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The average score on 7 tests in Algebra was 79. What was the sum of all the scores?
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Ans: 553
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The average cost of a ticket for 10 season games is $25. What is the cost of a season's pass at this rate?
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Ans: $350
You are finding the total. |
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The average cost of beans in the grocery store is $1.19/pound. Your total bill for purchasing only beans was $5.95. How many pounds of beans did you buy?
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Ans: 5.5
Number=Total/Average Number=$5.95 / $1.19= 5 |
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The average of 8 positive numbers is 22. If the average of the least and the greatest of these is 28, what is the average of the other six?
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Ans: 20
The original total was 22x8=176 The total of the highest and lowest is 2x28=56 The total of the remaining 6 is 176-56=120 120 / 6 = 20 |
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The average of 5 positive numbers is 36. If the average of the least and the greatest is 15, what is the average of the other three numbers?
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Ans: 50
Total for 5 numbers is 5x36=180 Total for 2 numbers is 2x15=30 The total for the 3 remaining numbers is 180-30=150 The average of the 3 remaining numbers if 150/3=50 |
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So far, Mary has received four grades: 80, 70, 60, 50. After she takes a fifth test, her mean score for the five tests is 68. What is her median score?
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Ans: 70
The total for the 5 tests is 5x68=340. Her total for 4 tests is 80+70+60+50=260. Her fifth score is 340-260=80. Her five scores are 80, 80, 70, 60, 50. Her median score is 70 |
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The average of two numbers is C. If one of these numbers is B, what is the other number?
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Ans: 2C-B
The average is C. 2xC is the total. The total - one number=the other number. 2C-B is the other number |
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The average of three numbers is y. IF one of the numbers is 6, then the sum of the two numbers is?
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Ans: 3y-6
Let a and b represent the two missing numbers. If the average of 3 numbers is y then their sum is 3y. This means a+b+6=3y and therefore a+b=3y-6 |
