Current location - Training Enrollment Network - Mathematics courses - Mathematical problems of financial management
Mathematical problems of financial management
1, Kobayashi's savings for one year is 20,000 yuan. Kobayashi's mother asked Kobayashi to save money, or buy government bonds, or buy various bonds, so that the return on investment of 20,000 yuan is the highest (it is stipulated to invest for three years).

You can buy wealth management products, and the income is higher than savings. One year is about 3.8%, and two or three years is better.

Xiaoming's mother usually buys and sells stocks. Recently, her mother sold two kinds of stocks, each of which got 2000 yuan. One made a profit of 20% and the other lost 20%. Mom asked Xiao Ming to help her calculate whether it was a profit or a loss. Still not making money or losing money? If so, how much did you make or lose?

Earned: 1.2x=2000, x= 1666.67 yuan (principal).

Loss: 0.8y=2000, y=2500 yuan (principal)

When the two kinds are added together, the principal * * * is 4 166.67 yuan. After throwing out, * * * gets 4,000 yuan, with a total loss of 166.67 yuan.

3. A few days ago, Mr. Zhang took a fancy to a house in a real estate, with a total price of 1 10,000 yuan. After discussing with the real estate, the real estate agent is willing to give the following preferential treatment: the total price of 10 thousand yuan is reduced by 10 thousand yuan first, and then 10% discount is given. Is this different from "10% discount first and then 1 1,000 yuan"? Is the price difference related to the total price of RMB m?

Total price is 500,000 yuan:

First subtract 10000, which is 490,000, and then give a 98% discount, which is 480,200.

Give a 98% discount first, that is, 490,000, and then subtract 10000, that is, 480,000.

The total price is 6,543,800 yuan+0,000 yuan: 970,200 yuan and 970,000 yuan respectively. So the price difference has nothing to do with M, its essence is whether the reduced 654.38+00000 yuan has been discounted by 98%, that is, it is always different from 200 yuan.