A man invests his savings in two accounts, one paying 6% and the other paying 10% simple interest per year. He puts twice as much in the lower-yielding account because it is less risky. His annual interest is $2420 dollars. How much did he invest at each rate

$11,000 - amount put in higher yielding account

$22,000 - amount he puts  in the lower-yielding account

Explanation:

simple interest = principal x time x interest rate

Let x = amount he put in the higher yielding account

let 2x = amount he puts  in the lower-yielding account

(2x x 0.06 x 1 ) + (x x 0.1 x 1) = $2420

0.12x + 0.1x = $2420

0.22x = $2420

x = 11,000 = amount he put in the higher yielding account

amount he puts  in the lower-yielding account = 2x = 11,000 x 2 = $22,000

answer; /// i do believe the correct answer is (possession utility);

1) the stages a new product goes through from beginning to end, i.e., the stages that a product passes through from introduction through growth, maturity, and decline. 2) the time from initial research and development to the time at which sales and support of the product to customers are withdrawn. 3) the period of time during which a product can be produced and marketed profitably.

                                          hope it