SOLUTION: 4.[5pts]Last year, Singh had $20,000 to invest. He invested some of it in an account that paid 7% simple interest per year, and heinvested the rest in an account that paid 6% simp
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-> SOLUTION: 4.[5pts]Last year, Singh had $20,000 to invest. He invested some of it in an account that paid 7% simple interest per year, and heinvested the rest in an account that paid 6% simp
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Question 1147225: 4.[5pts]Last year, Singh had $20,000 to invest. He invested some of it in an account that paid 7% simple interest per year, and heinvested the rest in an account that paid 6% simple interest per year. After one year, he received a total of $1280 in interest. How much did he invest in each account? Answer by ikleyn(52781) (Show Source):
Let x be the amount in dollars invested at 7%.
Then the rest (10000-x) dollars is the investment at 6%.
total interest is the sum of partial interests
0.07x + 0.06(20000-x) = 1280 dollars,
Do the rest on your own.
