Problema Solution
Roberto invested some money at 6% and then invested $5000 more than twice this amount at 10%. His total annual income from the two investments was $3620. How much was invested at 10%.
Answer provided by our tutors
let
x = the money invested at 6%
5000 + 2x = the money invested at 10%
total annual income from the two investments was $3620
0.06x + 0.10(5000 + 2x) = 3620
by solving we find
x = $12,000
click here to see the step by step solution of the equation
5,000 + 2*12,000 = 29,000
Roberto invested $29,000 at 10%.