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Three numbers are in the ratio 2 : 3 : 4 and their sum is 54. If 'x' is the common factor, then the value of 'x' is ________.

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User Alexunder
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2 Answers

3 votes

Answer: x = 6

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Step-by-step explanation:

The ratio 2:3:4 scales up to 2x:3x:4x after multiplying all three parts by x.

Their sum is 54, so we can say 2x+3x+4x = 54

Solve for x

2x+3x+4x = 54

9x = 54

x = 54/9

x = 6

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Extra info:

if x = 6, then,

  • 2x = 2*6 = 12
  • 3x = 3*6 = 18
  • 4x = 4*6 = 24

Then notice how 2x+3x+4x = 12+18+24 = 54 to help confirm the answer

Also note how 12:18:24 reduces to 2:3:4 after dividing all three parts by the GCF 6.

User Antarus
by
8.1k points
5 votes

Answer:

Given

  • ↦ Three numbers are in the ratio 2 : 3 : 4
  • ↦ The sum of number is 54.
  • ↦ 'x' is the common factor

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀

To Find

  • ↦ Value of 'x'

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀

Solution

Let the numbers,

  • ↦ 2x
  • ↦ 3x
  • ↦ 4x

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀

According to the question,


: \implies\sf{2x + 3x + 4x = 54}


: \implies\sf{9x = 54}


: \implies\sf{x = (54)/(9) }


: \implies\sf {x = \cancel(54)/(9)}


: \implies\sf{x = 6}


{\dag{\underline{\boxed{\sf{\purple{x = 6}}}}}}

Hence, The value of x is 6.

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀

Thus numbers are,

  • ↦ 2 × 6 = 12
  • ↦ 3 × 6 = 18
  • ↦ 4 × 6 = 24

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀

Verification


: \implies\sf{2x + 3x + 4x = 54}

  • Substituting the numbers


: \implies\sf{ 12+ 18 + 24 = 54}


: \implies\sf{54= 54}


{\dag{\underline{\boxed{\sf{\purple{LHS=RHS }}}}}}

Hence Proved!!

User Tapan Prakash
by
8.1k points

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