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The sum of two number is 25. One of the ...

The sum of two number is 25. One of the numbers exceeds the other by 9. The number are ?

A

15,10

B

16,9

C

13,12

D

17,8

Text Solution

AI Generated Solution

The correct Answer is:
To solve the problem step by step, let's denote the two numbers as \( x \) and \( y \). ### Step 1: Set up the equations We know from the problem that: 1. The sum of the two numbers is 25: \[ x + y = 25 \quad \text{(Equation 1)} \] 2. One number exceeds the other by 9: \[ x = y + 9 \quad \text{(Equation 2)} \] ### Step 2: Substitute Equation 2 into Equation 1 Now, we can substitute Equation 2 into Equation 1. Replace \( x \) in Equation 1 with \( y + 9 \): \[ (y + 9) + y = 25 \] ### Step 3: Simplify the equation Combine like terms: \[ 2y + 9 = 25 \] ### Step 4: Solve for \( y \) Subtract 9 from both sides: \[ 2y = 25 - 9 \] \[ 2y = 16 \] Now, divide by 2: \[ y = \frac{16}{2} = 8 \] ### Step 5: Find \( x \) Now that we have \( y \), we can find \( x \) using Equation 2: \[ x = y + 9 = 8 + 9 = 17 \] ### Conclusion The two numbers are: \[ x = 17 \quad \text{and} \quad y = 8 \] ### Final Answer The numbers are 17 and 8. ---
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