Chapter ISG, Problem 2.12STP

To determine

To complete the table

Answer to Problem 2.12STP

Final score of B is 92.2

Final score of N is 81.8

Final score of J is 94.5

Explanation of Solution

Given information:

Student	Homework Grade (%)	Test Grade (%)	Quiz Grade(%)	Final grade
B	94	88	100
N	82	78	91
J	90	97	95

Homework is 30%, test is 50% and quiz is 20%

Calculation:

For B,

Final grade is 30% of 94+ 50% of 88 + 20% of 100

So,

= $\frac{30}{100}\times 94+\frac{50}{100}\times 88+\frac{20}{100}\times 100$

And,

= $28.2+44+20$

Hence, final score of B is 92.2

For N,

Final grade is 30% of 82+ 50% of 78 + 20% of 91

So,

= $\begin{array}{l}\frac{30}{100}\times 82+\frac{50}{100}\times 78+\frac{20}{100}\times 91\\ \end{array}$

And,

= $24.6+39+18.2$

Hence, final score of N is 81.8

For J,

Final grade is 30% of 90+ 50% of 97 + 20% of 95

So,

= $\frac{30}{100}\times 90+\frac{50}{100}\times 97+\frac{20}{100}\times 95$

And,

= 27+ 48.5+19

Hence, final score of J is 94.5