She would multiply 40 by 4 because 15 is 1/4 of a whole minutes.
Your answer should be 160
No. They are called prescription glasses for a reason. However, you can buy reading glasses without a prescription. My mum buys them from the dollar store and they work quite well and last a long time. Hope this helps at least a little bit. Have a nice day.
Both lol
Thx again have a good day my guy