The average of three numbers is 32. The ratio between first number and the second number is 27:10. If the third number is 2 more than the second number, what is the sum of first and second numbers?
Question
The average of three numbers is 32. The ratio between first number and the second number is 27:10. If the third number is 2 more than the second number, what is the sum of first and second numbers?
Solution 1
Sure, let's solve this step by step:
Step 1: We know that the average of three numbers is 32. So, the sum of these three numbers is 32 * 3 = 96.
Step 2: The ratio between the first number and the second number is 27:10. Let's assume the first number as 27x and the second number as 10x.
Step 3: It's given that the third number is 2 more than the second number. So, the third number is 10x + 2.
Step 4: Now, we know that the sum of these three numbers is 96. So, we can set up the equation as follows: 27x + 10x + 10x + 2 = 96.
Step 5: Simplifying the equation, we get 47x + 2 = 96.
Step 6: Subtract 2 from both sides, we get 47x = 94.
Step 7: Divide both sides by 47, we get x = 2.
Step 8: Substituting x = 2 in 27x and 10x, we get the first number as 54 and the second number as 20.
So, the sum of the first and second numbers is 54 + 20 = 74.
Solution 2
To solve this problem, we need to follow these steps:
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We know that the average of three numbers is 32. So, the sum of these three numbers is 32 * 3 = 96.
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The ratio between the first number and the second number is 27:10. Let's assume the first number is 27x and the second number is 10x.
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The third number is 2 more than the second number. So, the third number is 10x + 2.
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Now, we know that the sum of these three numbers is 96. So, we can set up the equation: 27x + 10x + 10x + 2 = 96.
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Simplifying the equation, we get 47x + 2 = 96.
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Subtract 2 from both sides, we get 47x = 94.
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Divide both sides by 47, we get x = 2.
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Now, we can find the first and second numbers. The first number is 27x = 27 * 2 = 54 and the second number is 10x = 10 * 2 = 20.
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So, the sum of the first and second numbers is 54 + 20 = 74.
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