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9
Mark and Henry are marking exam papers. Each set takes Mark 25 minutes and Henry 1 hour. Express the times Mark and Henry

By Abigail

9
Mark and Henry are marking exam papers. Each set takes Mark 25 minutes and Henry 1 hour. Express the times Mark and Henry take as a ratio.
Give your answer in its simplest form

About the author
Abigail

A certain amount of money at compound interest grows upto Rs 4950 in 19 years and upto Rs 5049 in 20 years compounded annually. Fi

In measuring
the sides of a rectangle
one side is taken 10% in excess and the other 10% in deficit, then the error perce

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