Question

84. One third of a number when added to 1 gives 5. The number is:
1) 12
2) 13
3) 14
4) 18​

Answer 1

Given

• One third of a number when added to 1 gives 5.

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To find

• The required number.

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Solution

• Let the required number be x.

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$\tt\longrightarrow{One\: third\: of\: the\: number = \dfrac{1}{3}x}$

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Now, according to the question.

One third of a number when added to 1 gives 5.

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$\rm\longmapsto{\dfrac{x}{3} + 1 = 5}$

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$\rm\longmapsto{\dfrac{x + 3}{3} = 5}$

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$\rm\longmapsto{x + 3 = 15}$

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$\rm\longmapsto{x = 15 - 3}$

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$\bf\longmapsto{x = 12}$

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Therefore,

• The required number is 12.

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Hence,

• Option (1) is correct.

Answer 2

Answer:

1) 12

Step-by-step explanation:

1+x/3=5

3+x/3=5

x=15-3

x=12