Answer
Verified
396.6k+ views
Hint: We have to first understand the age and time concept clearly and try to not get confused. Here, ago means we should subtract the age from present age. Do calculation on present age. To find required age we have to add and subtract years as given in question.
Complete step-by-step answer:
A boy was ‘p’ year old ‘r’ years ago, so to find the current age we have to add r years to p.
So the required age of him will be (p + r) years.
Now we have to find his age after (p – r) years.
So, we have to add (p – r) to his present age.
So the required age will be = (p + r) + (p – r) = 2p.
Now, it is given that Hari was 5 years older than Anushka.
So let us assume age of Anushka is ‘x’ years so age of Hari will be (x + 5)
Now, it is given that Hari is twice older than her.
So age of Hari will be twice of Anushka i.e. 2x
Therefore, we can write,
2x = x + 5
i.e. x = 5.
Hence, the age of Anushka is 5 years and the age of Hari is 5 + 5 = 10 years.
Note: To solve this kind of problem we may confuse in Present, past and future age. That is if present age is P, then age 1 year ago was (P – 1) years and age 1 year hence will be (P + 1) years. There can be mistakes where we have to add years or where to subtract.
Complete step-by-step answer:
A boy was ‘p’ year old ‘r’ years ago, so to find the current age we have to add r years to p.
So the required age of him will be (p + r) years.
Now we have to find his age after (p – r) years.
So, we have to add (p – r) to his present age.
So the required age will be = (p + r) + (p – r) = 2p.
Now, it is given that Hari was 5 years older than Anushka.
So let us assume age of Anushka is ‘x’ years so age of Hari will be (x + 5)
Now, it is given that Hari is twice older than her.
So age of Hari will be twice of Anushka i.e. 2x
Therefore, we can write,
2x = x + 5
i.e. x = 5.
Hence, the age of Anushka is 5 years and the age of Hari is 5 + 5 = 10 years.
Note: To solve this kind of problem we may confuse in Present, past and future age. That is if present age is P, then age 1 year ago was (P – 1) years and age 1 year hence will be (P + 1) years. There can be mistakes where we have to add years or where to subtract.
Recently Updated Pages
The branch of science which deals with nature and natural class 10 physics CBSE
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths
Define absolute refractive index of a medium
Find out what do the algal bloom and redtides sign class 10 biology CBSE
Prove that the function fleft x right xn is continuous class 12 maths CBSE
Find the values of other five trigonometric functions class 10 maths CBSE
Trending doubts
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
Write an application to the principal requesting five class 10 english CBSE
Difference Between Plant Cell and Animal Cell
a Tabulate the differences in the characteristics of class 12 chemistry CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
What organs are located on the left side of your body class 11 biology CBSE
Discuss what these phrases mean to you A a yellow wood class 9 english CBSE
List some examples of Rabi and Kharif crops class 8 biology CBSE