d the current age today is khadija’s birthday - ,,,,,,,,,,,
Advertisements

Basic Math MCQ 11 (Age some years ago and current age)

MCQ 11 : Today is khadija’s birthday. After one year, she will become two times as she was ten years ago. the current age of Khadija?

a) 19           b) 20            c) 21              d) 22

Solution:

 

Let today Khadija is ‘x’ years old

so,  10 years ago her agewas = (x-10) years                   Education blog: MOST IMPORTANAT MCQS OF MATHEMATICS FOR COMPETATIVE EXAMS

 hence, One year after from today her agewill be (x+1) years

By given condition;

Ageafter one year = 2 times the age10 years ago

Mathematically,

\[ x+1 = 2 \times (x-10) \]

so, \[ x+1= 2x-20 \]

 hence, \[ 2x-x=20+1 \]

 so, \[ x=21 \]

So  she is today or  is 21 years

so option c is correct

………………………………………………………………………………………………………………………………………………………………………………………………….———————————————————————————————————-………………………………………………………………………………………………

  
Digiprove sealCopyright secured by Digiprove © 2020
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  

You may submit a MCQ or maths problem with solution tips here in the comment box below! If you could not solve anyone, you may submit a MCQ or maths problem without solution as well. We will try our level best to solve it for you!

Your email address will not be published.

You may use these <abbr title="HyperText Markup Language">HTML</abbr> tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>