Question

$5,000 is invested at 3% interest.

How much money must be invested at 5% interest so that the total interest from the two investments is $275 after one year?

A) $2,000
B) $2,500
C) $3,000

Answer 1

5000*0.03+0.05x=275
Solve for x
X=2500
The answer is b

Answer 2

B

Explanation:

If the is is a fixed interest for a year, let x be the amount invested at 5%. an expression can be written as:

`5000\cdot{0.03}+x\cdot{0.05}=275`

`0.05\cdot{x}=275-150`

`x=125/0.05=2500`

The amount that must be invested is $2500. The answer is B.