Notes

Questions

\(\textbf{1)}\) The average of seven numbers is 12. What is the sum of the numbers?

Show Answer

The sum is 84

 

\(\textbf{2)}\) Joe has had 9 quizzes so far in his class. His average score is 80%. He scored a 100% on his tenth quiz. What is his average now?

Show Answer

His average is now 82%

 

\(\textbf{3)}\) The average of three positive integers a, b, and c is 20. If a\(\lt\)b\(\lt\)c, what is the largest possible value for c?

Show Answer

57 is the largest possible value for c

 

\(\textbf{4)}\) The average of six numbers is 100, and the average of four of these numbers is 80. What is the average of the other two numbers?

Show Answer

The average is 140

 

\(\textbf{5)}\) The sum of 5 numbers is 45. What is the average of the numbers?

Show Answer

The average is 9

 

\(\textbf{6)}\) The average of x,y,z, and w is 14. The average of x and z is 10, what is the average of y and w?

Show Answer

The average is 18

 

\(\textbf{7)}\) On your first three tests you scored 89, 91 and 95. What do you have to score on the fourth and final test to average a 90% in the class?

Show Answer

You have to score 85% on the final.

 

See Related Pages\(\)

\(\bullet\text{ Word Problems- Linear Equations}\)
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\(\bullet\text{ Word Problems- Averages}\)
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\(\bullet\text{ Word Problems- Consecutive Integers}\)
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\(\bullet\text{ Word Problems- Distance, Rate and Time}\)
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\(\bullet\text{ Word Problems- Break Even}\)
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\(\bullet\text{ Word Problems- Ratios}\)
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\(\bullet\text{ Word Problems- Age}\)
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\(\bullet\text{ Word Problems- Mixtures and Concentration}\)
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