The sum of two numbers is 45 and their ratio is 7:8. Find the numbers.

8 Solve the equation: 9 Solve the equation: 11 The sum of the digits of a two digit number is 12. If the new number formed by reversing the digits is greater than the original number by 18, find the original number. Check your solution. 12 The numerator of a rational number is less than its denominator by 3. If the numerator becomes three times and the denominator is increased by 20, the new number becomes . Find the original number.