Question

$\sf\fbox\green{QUESTION}$
Fifteen years from now Ravi’s age will be four times his present age. What is Ravi’s present age?


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Answer 1

Step-by-step explanation:

Let present age of Ravi be x

Ravi's age after 15 years = x+15

Now, according to question x+15 = 4x

this implies that 15 = 4x-x

15 = 3x

15÷3 = x

5 = x

Hence Ravi's present age is 5 years.

HOP IT WAS HELPFULL.

Answer 2

Question :-

Fifteen years from now Ravi’s age will be four times his present age. What is Ravi’s present age?

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Solution :-

➲ Given Information :-

• After 15 years
• Ravi's age will 4 times his present age

➲ To Find :-

• Present age of Ravi

➲ Concept :-

• Simple Linear Equation Word Problems

➲ Explanation :-

• We assume Ravi's present age to be 'x' years. So after 15 years, Ravi's age will be 'x + 15' years. And as it is given in the question, His age after 15 years i.e., 'x + 15' years will be equal to 4 times his present age. So equation formed is
• x + 15 = 4 × x

➲ Equation Used :-

• $\overline{ \underline{ \boxed{ \boxed{ \rm{ \red{x + 15 = 4 \times x}}}}}}$

Note :- This is not a formula, just an Equation formed for this particular question.

➲Calculation :-

$: \implies\sf x + 15 = 4 \times x$

$\sf: \implies x + 15 = 4x$

Transposing 'x' to Right Hand Side of the equation, We get,

$\sf : \implies 15 = 4x - x$

$\sf: \implies 15 = 3x$

Transposing 3 to Left Hand Side of the equation, In the denominator, We get,

$\sf: \implies x = \dfrac{15}{3}$

Cancelling & Calculating further, We get,

$\sf: \implies \blue{\bf{x = 5}}\:\blue{ (years)}$

∴ Ravi's Present age is 5 years.

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Final Answer :-

• Present age of Ravi is 5 years.

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