Answer: 
Step-by-step explanation:
Three-fifths of the sum of 9 and f is
=
=
We have,

Introduce variable
such that 
The sum
is therefore 
So,
(sadia's age)
(father's age)
Hope this helps :)
Answer:
girl im over here trying to find the same answer
Step-by-step explanation:
Hopes this helps:
Answer: 750
Answer:
7.06 × 10^5
Step-by-step explanation: