In a contest, two people will have to answer 110 questions each. They score 4 points for each correct answer. The contest has not ended yet. Each person has already answered 100 questions. Person L has answered 55% of the first 100 questions correctly. Person M has answered 50% of the first 100 questions correctly. What is the minimum number of points that Person L must get from the last 10 questions to win the contest?

	Person L	Person M
Current total score	220	200
Additional score if the remaining questions are answered correctly	+ 24	+ 40
Final total score	244	240
	Winner

Score that Person L has earned so far
= 55% x 100 x 4
= ⁵⁵₁₀₀ x 100 x 4
= 220

Score that Person M has earned so far
= 50% x 100 x 4
= ⁵⁰₁₀₀ x 100 x 4
= 200

Remaining questions that each person has to answer
= 110 - 100
= 10

If Person M answers the last 10 questions correctly, the additional score that he will earn
= 10 x 4
= 40

Total score that Person M will earn after answering all the questions
= 200 + 40
= 240

Number of points that Person M is leading Person L by
= 240 - 220
= 20

For Person L to win the contest, the number of points he has to earn
= 20 + 4
= 24

Answer(s): 24