Answer:
Harry had $90 and Kayla had $120 at the beginning.
Explanation:
Given:
Initial amount of Harry's money = 75% of Kayla's initial amount.
Harry earned $30 and Kayla earned 25% more.
Harry's final amount = 80% of Kayla's final amount.
Let the initial amount of Kayla be 'x'.
As per question:
Initial amount of Harry's money = 75% of Kayla's initial amount.
Initial amount of Harry's money = 75% of

Initial amount of Harry's money =

Now, Harry earned $30 more. So, total amount of Harry is given as:
Final amount of Harry's money =

Kayla also earned 25% more of her money. So, final amount of Kayla's money is given as:
Kayla's final amount =

Now, again as per question:
Harry's final amount = 80% of Kayla's final amount.





Therefore, initial money Kayla had = $120
Initial money Harry had =

Hence, Harry had $90 and Kayla had $120 at the beginning.