Question

Carly swam 4.5 miles yesterday. Her friend Christine swam 1.2 times as far as Carly. How far did Christine swim?

Answer 1

Christine swam 6.75 miles

Answer 2

Christine swam 3.3 miles yesterday. Btw your other friend was wrong he/she added when you were supposed to subtract...
EXAMPLE:

45
-12
----
33 -> 3.3 miles