Asked by anonymous

Nena invested some money at 7% interest and the same amount at 10%. Her total interest for the year was $850. How much did she invest at each rate?
Answered by helper
x = amount invested

.07x + .10x = 850

Solve for x, amount invested
Answered by anonymous
i got it.thank u!
Answered by Anonymous
michael borrowed $ 700 from his father. He promise to pay back the $700 with interesd in 9 moths. If michael pays his father 6% simple interest how much does he owe at the end of 9 moths?
Answered by benji
phyllis invested $10,000, a portion earning a simple interest rate of 4.5 % per year and the rest earning a rate of 4% per year. after one year the total interest earned on these investments was $413.00. how much money did she invest at each rate?
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