75 additional minutes were used
$61.20-$49.95=$11.25
$11.25/$0.15=75 additional minutes
Answer:
equivalent to 
Step-by-step explanation:
Given ratio, 
It can be written as 
cancel common factor,

Answer:
(5, 20)
Step-by-step explanation:
1 DOC
2 BOC
3 EOC
4 AOD
5 AOC