Question 170451: Solve the problem. Roberto invested some money at 7%, and then invested $2,000 more than twice this amount at 11%. His total annual income from the two investments was $3,990. How much was invested at 11%?: Solve the problem. Roberto invested some money at 7%, and then invested $2,000 more than twice this amount at 11%. His total annual income from the two investments was $3,990. How much was invested at 11%?
Answer by jojo14344(1023)  (Show Source):
You can put this solution on YOUR website!Let  ---> money inv. 7%
Therefore,  ---> money inv. @ 11%
It follows,
=$13,000, amount inv @ 7%
Then,
 =$28,000, amount inv at 11% (ANSWER)
Check,
Thank you,
Jojo
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