Mary is 5 times as old as her daughter. 15 years from now, the daughter will be half as old as her mother. What is the present age of each.

      

Mary is 5 times as old as her daughter. 15 years from now, the daughter will be half as old as her mother. What is the present age of each.

  

Answers


John
Now:

mary is 5x years;

Daughter is x years

15 years from now:

Mary will be 5x + 15

daughter will be x + 15

$\frac{1}{2}$(5x + 15) = x + 15

5x + 15 = 2(x + 15)

5x + 15 = 2x + 30

3x = 15;

x = 5

Their present ages are:

Mary: 5 x 5 = 25 years

Daughter: = 5 years.
johnmulu answered the question on June 8, 2017 at 06:13


Next: How is a Bird's Foot delta formed?
Previous: Apart from Bird's Foot delta, what are the other types of coastal deltas?

View More Mathematics Questions and Answers | Return to Questions Index


Exams With Marking Schemes

Related Questions