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Mr. Zhang deposits 8000 yuan in the bank for two years, with an annual interest rate of 2.70% and interest tax of 20%. How much yuan can Mr. Zhang get after deducting interest tax?
After tax interest = principal × interest rate × term × (1-tax rate)
After tax interest = 8000 × 2.70% × 2 × (1-20%) = 345.6 yuan
Sum of principal and interest = 8000 + 345.6 = 8345.6 yuan
After deducting the interest at maturity, the principal and interest are 8345.6 yuan
Mr. Wang deposits 1000 yuan into the bank for a year, with an annual interest rate of 2.79%. When the bank deducts 5% interest tax, how many yuan can Mr. Wang get back the principal and after tax interest?
1000×2.79％×1×（1－5％）＋1000
＝1000×0.0279×1×0.95＋1000
=26.505+1000
=1026.505 yuan
Answer: Mr. Wang can get back 1026.505 yuan of principal and after tax interest
My mother deposits 10000 yuan in the bank, fixed for one year, and the annual interest rate is 2.52%. If the interest tax is 20%, how many yuan can my mother get back the principal and after tax interest after maturity?
Interest: 10000x2.52% = 252
After tax interest: 252-252x20% = 201.6
The total amount of principal and after tax interest can be recovered: 10000 + 201.6 = 10201.6
Uncle Li deposits 6000 yuan into the bank for three years, and the interest tax is 20%. If after three years, Uncle Li should pay the interest tax of 115.2 yuan, what is the annual interest rate?
There were 58 tons of grain in warehouse A and warehouse B. after 5 tons of grain were transported from warehouse A, the grain storage ratio of warehouse A and warehouse B was 4:3. How many tons of grain were there in warehouse A and warehouse B
115.2/(6000*3*20%)*100%=3.2%
6000*x*3*20%=115.2
If a is x tons, B is 58-x tons
（X+5）/(58-X)=4/3
Calculate x for yourself
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