Step-by-step explanation: The largest prime number less than 50. The largest number less than 50 is 49, but it is not prime, because 49=7·7. The previous number is 48, but it is also composite, because 48=2·2·2·2·3. The previous number is 47, it is prime.
The smallest composite number greater than 10. The smallest number greater than 10 is 11, but it is prime. The next number is 12, it is composite, because 12=2·2·3.
The difference between the largest prime number less than 50 and the smallest composite number greater than 10 is<u> 47-12=35.</u>
Cost of the lawnmower bought by Sarah = $320 Amount of down payment made by Sarah = $100 Amount paid by Sarah in 12 months = (12 * 25) dollars = 300 dollars Total amount paid by Sarah = (300 + 100) dollars = 400 dollars Excess amount paid as interest by Sarah = (400 - 320) dollars = 80 dollars Actual yearly rate of interest paid by Sarah = (80/320) * 100 percent = 25 percent So 25% yearly interest was paid by Sarah. The correct option is option "C".
