Let us assign the variable x to the total amount of money Mr. Rodriguez owns. The total amount of money would then be equal to the portion of money he spent on land, in stocks, in bonds and in his saving accounts. You have to learn first that the first three expenses are forms of investments. Investments on land are called real estates which are based on properties. The other type of investments are stocks and bonds which are based on paper assets. The only difference is that stocks mostly comes from private companies, and bonds come from the government agencies. Nevertheless, these are all investments.
Now, we create an equation to determine x. By the way, I am confused with the statement that says " Herrin 20th'. I don't really know what that means, so I'll just assume the the bonds were allocated with one-twentieth of his total money. So, the equation that we can formulate is:
x = 1/2 x + 1/10 x + 1/20 x + 35,000
There is one unknown in the equation. So, we can explicitly solve for x:
x = 100,000
Therefore, the total amount of money Mr. Rodriguez has is 100,000. The allocation for investments is equal to:
(1/2 + 1/10 + 1/20)(100000) = 65,000
Lastly, the remaining money of 35,000 is placed on his savings account.
