x%=55÷50= 1 10%
According to the compound interest calculation, assume that the interest rate is X.
Sum of principal and interest =10+10 * (1+x) to the fifth power =65.
The answer is X=40.63%
That is, the annual interest rate is 40.63%
Let the loan interest rate be I:
2×(P/A，I，7)= 10
Namely: (P/A, I, 7) = 5.
Check the annuity present value coefficient table:
When I = 9%, (P/A, I, 7) = 5.0330.
When I = 10%, (P/A, I, 7) = 4.8684.
By interpolation:
(I-9%)/( 10%-9%)=(5-5.0330)/(4.8684-5)
You can get: i=9.25%
That is, the loan interest rate is 9.25%
Extended data:
When the loan is obtained, the borrower of the bank deposit account can be credited with 6,543.8+0,000, and the short-term loan account can be credited with 6,543.8+0,000. Interest can be accrued or not, and there are two aspects of direct payment at maturity.
First, it does not bear interest. When it is paid directly after maturity, it can be credited to the short-term borrower, with the amount of 6,543.8+0,000, the financial expense accounting debit, with the amount of 22,500, and the bank deposit accounting credit, with the amount of 6,543.8+0,225.
Second, if you want to accrue interest on a monthly basis, you can debit the financial expense account with an amount of 750,000 and credit the interest payable or accrued expense account with an amount of 750,000 when you accrue interest in the first month. Take the first month as an example, several consecutive accounting entries are the same.
When the loan interest is repaid at maturity, the debit of short-term loan accounting subject is 654.38+00,000, the debit of interest payable or accrued expenses accounting subject is 22,500, and the credit of bank deposit accounting subject is 654.38+02.25 million.
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