A boy gets 3 marks for each correct sum and loses 1 mark for each incorrect sum. He does 25 sums and obtains 67 marks. Then how many correct sums were there
A boy gets 3 marks for each correct sum and loses 1 mark for each incorrect sum. He does 25 sums and obtains 67 marks. Then how many correct sums were there
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter7: Percents
Section: Chapter Questions
Problem 19PTTS
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A boy gets 3 marks for each correct sum and loses 1 mark for each incorrect sum. He does 25 sums and obtains 67 marks. Then how many correct sums were there?
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