Answer:
$45000 should be invested in stocks
Step-by-step explanation:
Given
Represent Bonds with B and stocks with S
[tex]S + B = 72000[/tex]
[tex]5B = 3S[/tex]
Required
Determine the values of S
Solve for B in [tex]5B = 3S[/tex]
[tex]B = \frac{3}{5}S[/tex]
Substitute [tex]\frac{3}{5}S[/tex] for B in [tex]S + B = 72000[/tex]
[tex]S + \frac{3}{5}S = 72000[/tex]
[tex]\frac{5+3}{5}S = 72000[/tex]
[tex]\frac{8}{5}S = 72000[/tex]
Solve for S
[tex]S = 72000 * \frac{5}{8}[/tex]
[tex]S = \frac{72000 * 5}{8}[/tex]
[tex]S = \frac{360000}{8}[/tex]
[tex]S = 45000[/tex]
Hence: $45000 should be invested in stocks