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

# 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

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

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

   (adsbygoogle = window.adsbygoogle || []).push({});