Bluebook SAT Test Linear Equations in One Variable 12

Question 1

If 2(3 − x) = x − 9, what is x?

Accepted Answer

5

Answer

6 − 2x = x − 9 → 15 = 3x → x = 5.

Question 2

A recipe requires flour and sugar in a ratio of 5:2. If a baker uses f cups of flour and the total of both ingredients is 28 cups, how many cups of flour are used?

Accepted Answer

20

Answer

Flour is 5/7 of 28 = 20.

Question 3

Solve for x: x/5 + x/10 = 9

Accepted Answer

30

Answer

2x/10 + x/10 = 9 → 3x/10 = 9 → x = 30.

Question 4

A basketball player's free-throw percentage improves by 4 points each week. After w weeks his percentage is 68. It started at 52. How many weeks have passed?

Accepted Answer

4

Answer

52 + 4w = 68 → 4w = 16 → w = 4.

Question 5

If 5x + 3 = 4(x + 2), what is the value of x?

Accepted Answer

5

Answer

5x + 3 = 4x + 8 → x = 5.

Bluebook SAT Practice Test

Bluebook SAT Practice Test

Bluebook SAT Test Linear Equations in One Variable 12