Mathematics, 18.08.2019 22:30 lizisapenguin

Mr jones has 20,000 to invest. he invests part at 6% and part at 7%, if hr earns 1,280 in interest after 1 year, how much did he invest at each rate.

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Mr jones has 20,000 to invest. he invests part at 6% and part at 7%, if hr earns 1,280 in interest a...