Question

Jalessa earned a score of 160 on a recent 50 question spelling contest. The scoring for the contest was +4 for each correct answer, -1 for each incorect answer, and 0 for each unanswered question. If she answered every question, what is the maximum number of questions that Jaleesa could have answered correctly?

Answer 1

• 42 correct answers

Explanation:

Set a system of equations.

c- correct, i- incorrect.

• c + i = 50
• 4c - i = 160

Add the equations together:

• 5c = 210
• c = 42

Then find the value of i:

• i = 50 - 42
• i = 8