Mathematics
Mathematics, 20.06.2020 22:57, samwamooo

A sum of $1200 is lent in the beginning of a year at a certain rate of interest. After 8 months, a sum of $600 more is lent but at the rate twice the former. At the end of the year, $42 is earned as interest from both the loans. What was the original rate of interest?

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A sum of $1200 is lent in the beginning of a year at a certain rate of interest. After 8 months, a s...

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