Problems on Numbers - Questions and Answers

21. 24 is divided into two parts such that 7 times the first part added in 5 time the second part makes 146. The first part is:

22. The sum of two numbers is 29 and the difference of their squares is 145. The difference between the number is

23. The sum of three consecutive odd numbers is 57. The middle one is:

24. A certain number of two digits is three times the sum of its digits and if 45 be added to it, the digits are reversed. The number is:

25. The sum of squares of two numbers is 80 and the square of their difference is 36. The product of the two numbers is: