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6. Three numbers have a sum of 68. The second number is 1 less than twice the first. The third number is three times the second. What are the three numbers?

User Jkaufmann
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2 Answers

4 votes

Answer:

x = 8, y = 15 and z = 45

Explanation:

Please see the attached for explanation

6. Three numbers have a sum of 68. The second number is 1 less than twice the first-example-1
6. Three numbers have a sum of 68. The second number is 1 less than twice the first-example-2
User Anjani
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5.5k points
4 votes

Answer:

The numbers are 8, 15 and 45

Explanation:

In this question, we are told to find three numbers according to the information in the question.

Let’s say the first number is x

The second number is 1 less than twice the first, that is 2x-1

The third number is 3 times the second meaning 3(2x-1)

Now let’s sum the numbers up to give 68

x + 2x - 1 + 6x -3 = 68

9x -4 = 68

9x = 68 + 4

9x = 72

x = 72/9

x = 8

The second number is 2x -1 = 2(8) - 1 = 16- 1 = 15

The third number is three times the second = 3(15) = 45

User Mostafa Bahri
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