you are taking the following test:

Grade: 7,    Subject: Math,    Topic: Simple Interest
 Question 1: Andrew borrowed \$1500 for 6 months at 8.5% annual simple interest, how much will he repay at the end of the 6-month period? \$63.75 \$1436.25 \$1563.70 \$1563.75
 Question 2: Which is the best investment? \$2000 at 4.25% simple interest for 9 months \$1200 at 8.5% simple interest for 6 months \$1800 at 3.75% simple interest for 6 years \$800 at 5% simple interest for one years
 Question 3: What principal must Mr. Harris put in the bank today to earn \$285 simple interest in 2 years if the simple interest rate is 4.75%? \$3,500 \$3,000 \$5,350 \$1,800
 Question 4: You deposit \$5,000 in an account that earns 6.25% simple interest. How many years will it take your account balance to reach \$7,500? 8 years 12 years 9 years 5 years
 Question 5: Matthew deposited \$4,000 in an account. What simple interest rate must he get to have \$8,080 in his account in 12 years? 7.5% 8.25% 8.5% 12%
 Question 6: Find the missing value. P = 600,  I = 456,  r = ?,  t = 8 years 7.75% 9.25% 95% 9.5%
 Question 7: Daniel deposited \$3,000 in an account. How many years will it take his money to double at a simple interest rate of 10%? 5 years 15 years 10 years 20 years
 Question 8: Brian invested \$800 at 5% simple interest rate. How many years will it take his money to reach \$1000? 4 years 5 years 2 years 20 years
 Question 9: Mary borrowed \$500 at 5% simple interest. The total interest payable over the period of the loan is \$50. How many years will it take her to repay the loan? 3 years 5 years 8 years 2 years
 Question 10: I = 56.55,  r = 6.5%,  t = 3 years P  = ? \$290 \$255 \$345 \$198