Question

One-third of a number when added to 1 gives 15. Find the number.

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Answer 1

Step-by-step explanation:

1/3x+1=15

1/3x=15-1

1/3x=14

x=14x3

x=42

therefore x is 42

CHECK

1/3x42+1=15

14+1=15

15=15

So it is correct

Answer 2

Answer:

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Step-by-step explanation:

Let the no. be x

∴ ATQ

$\frac{1}{3} x + 1 = 15 \\ \\ \frac{x}{3} = 15 - 1 \\ \\ \frac{x}{3} = 14 \\ \\ x = 14 \times 3 \\ \\ x = 42$

Verification:

$\frac{1}{3} x + 1 = 15 \\ \\ \frac{1}{3} (42) + 1 = 15 \\ \\ \frac{42}{3} = 15 - 1 \\ \\ \frac{42}{3} = 14 \\ \\ 14 = 14$

Hence verified