Answer:
OR 
Step-by-step explanation:
So first you find the difference between the new cost and the old cost:
450 - 370 = 80
So the increase was 80.
When you write it as a fraction you write the increase ( 80 ) over the starting cost ( 370 ).
Thus the answer becomes 
But you can always reduce it to its lowest terms thus:

HOPE THIS HELPED
Answer:
Step-by-step explanation:
Answer:
238.888888
Explanation:
Set up a proportion
18%=43
while 100%=x
This gets you 18× x
=
100
×
43
18
×
x
=
4300
Now divide both sides by
18
. The number is
x
=
238
.
¯
8
(a repeating decimal)
Answer:
$400
Step-by-step explanation:
Question = 28 dollars = 7% of what?
Formula = 28/7% = ? which is equal to 28/0.07 = 400
400 should be the answer so I hope this helps!
Answer:
−15+5h
Step-by-step explanation:
Answer:
d
Step-by-step explanation: