$6300 is invested,part of it at 10% and part of it at 7%.For a certain year, the total yield is $534.00. How much was invested at each rate

Answer 1

amount invested at 10% --- x
amount invested at 7% --- 6300-x

solve for x ....

.1x + .07(6300-x) = 534

I suggest multiplying each side by 100

Answer 2

$6300 is invested, part of it at 10% and part of it at 69%. For a certain year the total yield is $598.00. How much invested at each rate?