✔ 最佳答案
3) Venus borrows $20000 from a bank. It CHARGES simple interest at an interest rate 6.5% p.a. Whan she returns the money to the bank, besides the sum of money she has borrowed, she needs to pay $1950 to the bank too. How long does Venus borrow the money from the bank?
Let y be the no. of years she had borrowed,
20000+(20,000 x 0.065n)=20000+1950
20,000 x 0.065n=1950
n=1950 / (20000 x 0.065)
n=1.5
Therefore she borrowed the money for 1.5 years
2007-05-15 20:51:41 補充:
打錯左... n 即 y