5. In an examCurtis scored x marks and Khalid scored 20 marks more than Curtis a) What was Khalid's score? b) What was the total score of Curtis and Khalid? c) If their total score was 130, what was Curtis's actual score?
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Step-by-step explanation:
Curtis scored x
khalid's marks = 20 + x
total score of Curtis and Khalid = 20 + x + x = 20 + 2x
If their total score was 130,
20 + 2x = 130
2x = 110
x = 55
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