Answer:
- internet : cable = 35 : (90 -35 -14)
- internet / cable = 35 / (55 -14)
- internet / cable = 35 ÷ 41
Explanation:
A proportion can be written a number of ways. Here, we're asked for a specific ratio. Ratios are generally written using a colon (:) or a division symbol (/ or ÷). Here, the cable bill must be computed from the amounts of the other portions of the bill. That computation lends itself to being written in different ways. The point of the exercise is unclear, so the desired 'three different ways' are also unclear.
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If we assume that the cable TV portion of the bill is separable from the package, it can be written as ...
cable bill = $90 -35 -14 = $55 -14 = $41
So, the ratio of internet to cable bills can be written as any of ...
internet : cable = 35 : (90 -35 -14)
internet : cable = 35 : (55 -14)
internet : cable = 35 : 41
internet / cable = 35 / (90 -35 -14)
internet / cable = 35 / (55 -14)
internet / cable = 35 / 41
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Of course, the computation of the cable bill can be accomplished other ways, so that expression could be any of
cable bill = 90 -49 = 76 -35
Then you could have ...
internet : cable = 35 : (90 -49)
internet / cable = 35 / (76 -35)