Last year, Elsa deposited
$7000
into an account that paid
3%
interest per year and
$9000
into an account that paid
11%
interest per year. No withdrawals were made from the accounts.

Question

Last year, Elsa deposited 
$7000
 into an account that paid 
3%
 interest per year and 
$9000
 into an account that paid 
11%
 interest per year. No withdrawals were made from the accounts.

anonymous · Answer

What was the percent interest for the total deposited?

anonymous · Answer

what was the total interest erned at the end of 1 year

yanjiayu · Answer

(7000*3%+9000*11%)/(7000+9000)=7.5%
the interest earned at the end of 1 year is 7000*3%+9000*11%=1200$

anonymous · Answer

thank you so much . can u help me with another one

anonymous · Answer

Suppose 
11
 quarts of pure antifreeze is mixed with 
5
 quarts of a solution that is 
16%
 antifreeze.
Answer the questions below. Do not do any rounding.

anonymous · Answer

how many quarts of antifreeze are in the resulting mixture 
 
What percentage of the resulting mixture is antifreeze?
%

yanjiayu · Answer

antifreeze is 11+5*16%=11.8 quarts
11.8/(11+5)=73.75%

anonymous · Answer

thank you so much . man i really appreciate the help

yanjiayu · Answer

You are welcome.