# What do I need to make on the exam?

## Well, there’s a short way and a long way to figure that out.

### For starters, you need 3 pieces of information: (Joe’s grades in bold)

1) The grade you desire for the semester

**(Joe wants an 80)**

2) Your 1^{st} quarter grade

**(Joe made an 82)**

3) Your likely 2^{nd} quarter grade

**(Joe made a 75)**

* The average of the 2 quarters is 80% of the semester grade, and the final exam is the other 20%.*

## The short way:

If you use algebra to solve for the exam grade, it’s a kind of long process that ends up at this (trust me):

**What you need to make on the final** = 5(desired semester grade) – 2(1^{st} quarter grade) – 2(2^{nd} quarter grade)

*For Joe:*

**What he needs to make on the final** = 5(80) – 2(82) – 2(75)

**What he needs to make on the final** = 400 – 164 – 150

**What he needs to make on the final** = 86

## The long way (Joe’s grades under each step):

1. Average your 2 nine weeks grades. *[ {(1 ^{st} Quarter Grade) + (2^{nd} Quarter Grade)} ÷ 2]*

· **82+75 = 157; 157 ÷ 2 = 78.5**

2. Multiply this average by 0.8

· **78.5 x 0.8 = 62.8**

3. Subtract this number from your desired FINAL SEMESTER GRADE

· **He wants an 80. 80 – 62.8 = 17.2**

4. Multiply this number by 5. The answer is the grade you need to make on the final exam.

· **17.2 x 5 = 86. You need to make at least an 86 on the final**