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 KCSE Mathematics Paper 2 Revision Questions and Answers Set 8

A form IV math teacher originally worked out the mean mark of her 30 students to be 41. After the correction of the test, she added some marks to Amina, Nduku and Karim in the ratio 2 :3 :4. If the new mean mark for the class is 42.5,determine how many
more marks Karim was added than Nduku.

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