Question

Question #2d4f9

Answer 1

Amount to be invested in `5%` interest bond is `x= $12500`
Amount to be invested in `7%` interest bond is `x= $2500`

Explanation:

Let `$x` be the amount invested in `5%` interest bond.
Then `$(15000-x)` is the amount invested in `7%` interest bond.
By condition `0.05*x + 0.07*(15000-x) =800 :.`
`0.05x-0.07x+1050=800 or 0.02x =250 or x= $12500 :. 15000-x=15000-12500=$2500`
The amount to be invested in `5%` interest bond is `x= $12500`
The amount to be invested in `7%` interest bond is `x= $2500`[Ans]