Math

[JUANALLAN offline]

Billy had a total of $700 invested in high-yield investments. Part of the $700 was invested at 7% per year and the rest at 6% per year. After on year, the total interest earned was $47. Determine how much Billy invested at each rate.

[admin]

solve( a+b=700, a*0.07+b*0.06=47 )