Tom and Jerry are best friends. they have not seen each other for more than a month. One day, Tom decided to call Jerry via telephone long distance call. The telephone company charges Tom ₱40.00 for the first 5 minutes, and ₱5.00 for every minute or a fraction of it thereafter.
a. how much will the company charge to Tom if he talked to Jerry for 20 minutes?
b. write the mathematical sentence that describes the given relation, with x as the number of minutes they talked with each other, and y the total cost of the call.
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Let ; x be the number of minutes they
talked with each other, excluding the
first 5 minutes
y be the total cost of the call
first 5 mins + x = 20
x = 20 - 5
x = 15
cost of first 5 min + x(5) = y
40 + 15(5) = y
40 + 75 = y
115 = y
Therefore, the company will charge Tom
115 pesos if he talked to Jerry for 20 minutes.
Please mark me as brainlies or I will delete my answer, thanks.
Answer:
5×20 = 100 pesos
20minutes
every 5 pesos every minute