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Inverse Proportions

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Dee-M-See | 16:47 Tue 17th Oct 2006 | Quizzes & Puzzles
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At peak times a phone card will give 120 minutes of calls
At off peak times, the cost of the calls are a third of the cost at peak times
How many minutes of calls will the will the card give, at off peak times
And can you show me how is it worked out
Thanks
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If off peak calls are 1/3 of the price of peak calls, you will get three times as long for the same price => 360mins
Question Author
Gandolf
Thanks very much for your prompt answer

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