
Ben M. answered 02/25/16
Tutor
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UCLA Graduate (PhD) Effective Math and Science Tutor
So we have S + B = 36000
since the total of stocks and bonds is 36000
Also we have 3S = 5B since three times the stocks equals five times the bonds
Substitute S = 5B/3 into the first equation
5B/3 + B = 36000
8B/3 = 36000
B = 13500
therefore S = 22500