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Mathematics, 19.10.2020 19:01 stormmesa1

A boy's mark for a test is 18 out of a total of 30 marks. If the test had been marked out of 40 what would the boy's mark have
been?

Please help me, with explanation. Thank you<3

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A boy's mark for a test is 18 out of a total of 30 marks. If the test had been marked out of 40 wha...
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