10 :) I had this, EZ now :)
Answer:

Step-by-step explanation:
<h3>to understand this</h3><h3>you need to know about:</h3>
<h3>let's solve:</h3>





Answer:
If she doubles it then it will be 4: 10
If she triples it then it'll be 6: 15
Hope that helps!
I need help to find the root?