Question

The distance from your house to the ice cream shop is 12 miles. Your best friend’s house is on the segment between your house and the ice cream shop, and his house is 3 miles from the ice cream shop. How many miles is your house from your best friend’s house?

Answer 1

Your house to the ice cream shop: 12 miles
Your best friend's house from the ice cream shop: 3 miles

Your house --- BF house --- Ice cream shop
-------3 miles------
------------------- 12 miles------------------

Your house from your best friend's house is 9 miles.

12 miles - 3 miles = 9 miles.