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September 17, 2014

Homework Help: Maths

Posted by Annabella Richards on Monday, June 20, 2011 at 2:10am.

Mrs Smith pays kate for babysitting by giving her 10 cents for the first-half hour, 20 cents for the second half-hour, 40 cents for the third half-hour etc. How long does she work to earn $12.70?

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