Question

Mardi received an inheritance of $60,000. She invested part at 10% and deposited the rest the remainder in tax-free bonds at 11%. Her total annual income from the investment was $6100. Fine the amount invested at 10%

Answer 1

A*10% + B*11%=6100

Where A is the investment
and B is the deposit

Answer 2

We know that A + B= 60,000

Answer 3

We want to know what A is right ? So we want to replace the B in the first equation with an A.
From the second equation I gave you

A + B= 60,000

B= 60,000-A

Answer 4

Replace that with the first and solve for A

Answer 5

A*0.10 + B*0.11=6100

Answer 6

thank you. answer is 50,000 :)