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.
[answer properly.]
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.
[answer properly.]
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Answer:
a. ₱115.00 fr 20 minutes
b. x - 5 = n
n x 5 = y
y + 40 = total y
SOLUTION:
x = number of minutes they talked to each other
y = total cost of the call.
since the first five minutes are given, subtract 5 to 20.
20 - 5 = 15 mins.
calculate the cost of the 15 mins. call
5 x 15 = 75
add the cost of the first 5 mins. and the 15 mins. thereafter
₱40.00 (first 5 minutes) + ₱75.00 (15 mins. x 5) = ₱115.00
Hence,
The company will charge Tom ₱115.00 if he talked to Jerry for 20 minutes.