Question 513251
Let
Present age of Anna = a

In 36 years
a+36=5a
a+36=5a
a-5a=-36
-4a=-36
-4a/-4=-36/-4
a=9

Anna is 9 years old now.

In 36 years she will be =(36+9)= 45 (which is 5 times of 9)