Xiao Ming's mother deposited 5000 yuan in the bank, The tax method of deposit interest stipulated by the state is: interest tax = interest × 20%, and you can get RMB 5090 yuan at the end of one year. What's the annual interest rate of this deposit

Let the annual interest rate be X
Interest = 5000 * x
Interest tax = 5000 * x * 20%
5000+5000*X-5000*X*20%=5090
X=2.25%

Li Hua deposits 5000 yuan into China Construction Bank for two years with an annual interest rate of 2.7%. When it matures, what is his actual after tax interest______ ．

5 000 × 2.7% × 2, = 135 × 2, = 270 (yuan); 270 × (1-20%), = 270 × 80%, = 216 (yuan); answer: his actual after tax interest is 216 yuan

Xiao Li's mother deposits 5000 yuan in the bank for one year with an annual interest rate of 2.25%. When she withdraws money, the bank will deduct 20% of the interest tax. When it matures, how much is the interest tax? How much is it?

5000 × 2.25% × 1 × 20%, = 5000 × 0.0225 × 1 × 0.2, = 22.5 yuan; answer: when due, the interest tax paid is 22.5 yuan. 5000 + 5000 × 2.25% × 1-22.5, = 5000 + 112.5-22.5, = 5090 yuan; answer: take back 5090 yuan

My mother will deposit 5000 yuan into the bank for a year, with an annual interest rate of 1.98% and an interest tax of 5%. After maturity, my mother can get back the principal and after tax interest from the bank. How many yuan in total?

5000 × 1.98% × 1 × (1-5%) + 5000 = 5000 × 0.0198 × 1 × 0.95 + 5000, = 99 × 0.95 + 5000, = 94.05 + 5000, = 5094.05 yuan; a: Mom can get back the principal and after tax interest from the bank, totaling 5094.05 yuan

Xiao Ming's mother deposited 5000 yuan in the bank, The tax method of deposit interest stipulated by the state is: interest tax = interest × 20%, and you can get RMB 5090 yuan at the end of one year. What's the annual interest rate of this deposit