dollar6219
06.07.2020 •
Mathematics
Ob's wife Bobette is looking for a new phone plan for their home because ever since the pandemic, all the kids have been using up their shared data! She's looking at two companies, Koodu and Fidu.
Koodu charges $50 a month plus $36 per 1 gigabyte of data over the limit. Fidu charges $35 a month plus $39 per 1 gigabyte of data over the limit.
At how many gigabytes over the limit, will the two companies charge the same amount of money?
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Ответ:
5 gigabyte
Step-by-step explanation:
Let the GB data at which the charge for both company is same be x
For Kodu
monthly fixed charge = $50
Per GB data charge over limit = $36
charge for X GB data = Per GB data charge over limit *x = $36*x = 36x
Total charge for Kodu for x gb data = monthly fixed charge +charge for X GB data = $50 +$36
For Fidu
monthly fixed charge = $35
Per GB data charge over limit = $39
charge for X GB data = Per GB data charge over limit *x = $39*x = 39x
Total charge for Fidu for x gb data = monthly fixed charge +charge for X GB data = $35 +$39
Given that at at X GB data charge for both the company is same then
50 +36x = 35 +39x
39x - 36x = 50-35
=> 3x = 15
=> x = 15/3 = 5
Thus, at 5 GB over the limit, charge for both the company will be same.
Ответ:
B
Step-by-step explanation: