Bunuel wrote:
If 1/2 an investment portfolio was invested in stocks, 1/5 in a mutual fund, 1/10 in bonds, and the remaining $25,000 in a savings bond, what was the total amount in the portfolio?
(A) $100,000
(B) $125,000
(C) $150,000
(D) $200,000
(E) $250,000
We can let the total investment = n and create the following equation:
(1/2)n + (1/5)n + (1/10)n + 25,000 = n
Multiplying the equation by 10, we have:
5n + 2n + n + 250,000 = 10n
250,000 = 2n
125,000 = n
Answer: B