Answer:
Most of the time if it doesn't say our should round up it's best to leave the number as it is.However in some situations this isn't possible.For instance if there are to be a recurring decimal like 47.47485... it would be best to round to the nearest to decimal places so-47.47 unless told otherwise.
I think the answers are 2/6 ,3/9, 4/12, 5/15.
Answer:
$25
Step-by-step explanation:
500 mins = $35 (fixed + per minute charge)
1500 mins = $55 (fixed + per minute charge)
If we let per minute charge be "m"
and
let fixed charge be "f"
we can write 2 equations as:
35 = 500m + f
and
55 = 1500m + f
Now,
We re-write both equations in terms of f and equate both expressions:
f = 35 - 500m
and
f = 55 - 1500m
Equating:
35 - 500m = 55 - 1500m
-500m + 1500m = 55 - 35
1000m = 20
m = 20/1000
m = 0.02
Now we find f, what we are looking for:
f = 35 - 500m
f = 35 - 500(0.02)
f = 25
So, the fixed charge is $25