SOLUTION: A person who wants to get in shape goes to a local gym that advetises 78 training sessions for $ 1159. find the cost of 154 training sessions

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Question 1195995: A person who wants to get in shape goes to a local gym that advetises 78 training sessions for $ 1159. find the cost of 154 training sessions
Found 2 solutions by ikleyn, greenestamps:
Answer by ikleyn(52872) About Me  (Show Source):
You can put this solution on YOUR website!
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A person who wants to get in shape goes to a local gym that advetises 78 training sessions
for $ 1159. find the cost of 154 training sessions
~~~~~~~~~~~~~~~~~~~~ 

Write a proportion

    1159%2F78 = x%2F154.


From the proportion,  find  x = %281159%2A154%29%2F78 = 2288.28  dollars.    ANSWER


Notice that both sides of the proportion represent the price of one single training session.

Solved.

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Answer by greenestamps(13208) About Me  (Show Source):
You can put this solution on YOUR website!


The solution from the other tutor uses a proportion in a very formal way, which is fine.

A less formal and more intuitive calculation for finding the answer, knowing that the cost is directly proportional to the number of sessions, is to multiply the given cost by the ratio of the two numbers of sessions:

1159%2A%28154%2F78%29

Use a calculator to get the answer of $2288.28, rounded to the nearest cent.