Answer:
Step-by-step explanation:
a). 






Therefore, common denominator of 20.
b). 





Common denominator of 10.
c). 
= 

= 
Common denominator of 48.
The answer would be just 2 because it didn't turn to a fraction.<span />
Answer:
Set up a proportion ,
80/x 9/100
9 is over 100 because it is a percent and 100% is the highest %.
doing a proportion you cross multiply getting you..
9x =80 x 100
9x= 800
divide by 9 on both sides
that determines your answer
you try !
Step-by-step explanation: