# After 15 years, Mary’s age will be four times of her present age. Find her present age.

Let Mary’s present age be x years.

Her age after 15 years = (x + 15) years.

According to the given condition,

4x = x + 15

4x – x = 15 (Transposing x to LHS)

3x = 15

x = (Transposing 3 to RHS)

x = 5

Mary’s present age is 5 years.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Applications of Linear Equations in One Variable37 mins
NCERT | Solving Imp. Qs. Related to Ages49 mins
Solution of Linear Equation34 mins
Making Equations Simple41 mins
NCERT | Imp. Questions on Solutions of Linear Equations in One Variable39 mins
NCERT | Linear Equations in One Variable44 mins
Foundation | Cracking Previous Years IMO Questions42 mins
Linear Equation in One Variable46 mins
Champ Quiz | Linear Equation in One Variable44 mins
Genius Quiz | Solutions of Linear equation in One Variable26 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses