Acc. Algebra 2
posted by Lisa
Jan invested $1200 at a certain simple interest rate and $2200 at 3%higher. Her annual earnings were $253. Find the two interests rate if she earned $121 more on the larger investment than on the smaller.

Reiny
smaller rate  x
larger rate  x + .03
1200x + 2200(x+.03) = 253
1200x + 2200x + 66 = 253
3400x = 187
x = .055
lower rate is 5.5% higher rate is 8.5%
check:
return on 1200 = .055(1200) = 66
return on 2200 = .085(2200) = 187
which is $121 more
You actually had more information than was needed to solve the problem 
Lisa
Yeah I realized that!!! Thank you very much!!!
Respond to this Question
Similar Questions

Algebra
An investment adviser invested $14,000 in two accounts. One investment earned 5% annual simple interest, and the other investment earned 2.5% annual simple interest. The amount of interest earned for 1 year was $540. How much was invested … 
MATH
An investment adviser invested $14,000 in two accounts. One investment earned 7% annual simple interest, and the other investment earned 5.5% annual simple interest. The amount of interest earned for 1 year was $884. How much was invested … 
algebra
An investment adviser invested $14,000 in two accounts. One investment earned 4% annual simple interest, and the other investment earned 2.5% annual simple interest. The amount of interest earned for 1 year was $458. How much was invested … 
math
An investment adviser invested $14,000 in two accounts. One investment earned 4% annual simple interest, and the other investment earned 2.5% annual simple interest. The amount of interest earned for 1 year was $458. How much was invested … 
math
An investment adviser invested $14,000 in two accounts. One investment earned 4% annual simple interest, and the other investment earned 2.5% annual simple interest. The amount of interest earned for 1 year was $458. How much was invested … 
math
An investment adviser invested $14,000 in two accounts. One investment earned 4% annual simple interest, and the other investment earned 2.5% annual simple interest. The amount of interest earned for 1 year was $458. How much was invested … 
MathDesperate
An investment adviser invested $14,000 in two accounts. One investment earned 4% annual simple interest, and the other investment earned 2.5% annual simple interest. The amount of interest earned for 1 year was $458. How much was invested … 
algebra
An investment of $4600 is made at an annual simple interest rate of 6.8%. How much additional money must be invested at an annual simple interest rate of 9% so that the total interest earned is 8% of the total investment? 
Math
An investment of $3,000 is made at an annual simple interest of 5%. How much additional monery must be invested at an annual simple interest rate of 8% so that the total annual interest earned is 7.5 of te original amount that you … 
math
An investment of $3,000 is made at an annual simple interest of 5%. How much additional money must be invested at an annual simple interest rate of 8%, so that the total annual interest earned is 7.5 of the original amount that you …