Samir studied 5 hours for his first Economics test and his test score was 85; 6 hours for his second Economics test and scored 90; and 7 hours for his third Economics test and scored 95. He also studied 5 hours for his first Math test and his test score was 68; 6 hours for his second Math test and scored 78; and 7 hours for his third Math test and scored 88. 109. Based on the information above, the average benefit per hour studied for the Economics tests was and the average benefit per hour studied for the Math tests was . A. 15; 13 B. 5; 10 C. 13; 15 D. 10; 5
Samir studied 5 hours for his first Economics test and his test score was 85; 6 hours for his second Economics test and scored 90; and 7 hours for his third Economics test and scored 95. He also studied 5 hours for his first Math test and his test score was 68; 6 hours for his second Math test and scored 78; and 7 hours for his third Math test and scored 88.
109.
Based on the information above, the average benefit per hour studied for the Economics tests was and the average benefit per hour studied for the Math tests was .
|
A. |
15; 13 |
|
B. |
5; 10 |
|
C. |
13; 15 |
|
D. |
10; 5 |
the name of book is principles of
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