Atotal of $11,000 is invested in two accounts. part was invested at 4% and the rest was invested at 7%. if the investments earn $680 peer year, how much was invested at each rate? i=prt

The amount invested at 4% was $3,000 and the amount invested at 7% was $8,000

Step-by-step explanation:

we know that

The simple interest formula is equal to

where

I is the Final Interest Value

P is the Principal amount of money to be invested

r is the rate of interest  

t is Number of Time Periods

in this problem we have

substitute in the formula above

solve for x

so

therefore

The amount invested at 4% was $3,000 and the amount invested at 7% was $8,000

351.23

step-by-step explanation: