24,26
6 and 4.
7 & 9
The numbers are 18 and 12
The numbers are 9 and 7
The sum of two numbers is 45 and their difference is 5. What are the two numbers? Let's start by calling the two numbers we are looking for x and y. The sum of x and y is 45. In other words, x plus y equals 45 and can be written as equation A: x + y = 45 The difference between x and y is 5. In other words, x minus y equals 5 and can be written as equation B: x - y = 5
43 and 2
8 and 6 have a difference of 2 and a sum of 14.
You can use the formula for the sum of an arithmetic series. Sn = (n/2)[2a + (n - 1)d].....n is the number of terms, a is the first term and d the common difference between terms. In this question, n = 45, a = 1 (as 1 is the first odd number) and d = 2 (the difference between consecutive odd numbers). Then, S(45) = (45/2)[2 + 44x2] = (45/2) x 90 = 2025.
The two numbers are 10 and 2
The numbers are 11 and 10
Three
24,26
9 13
0.4 and 2.
6 and 4.
7 & 9