<PRE><B>Question 1190157</B>
x=number of minutes
Intl: $0.18x are charges
World: $50+$0.10x for charges
International is cheapest at low levels of use.
50+0.10x=0.18x
50=0.08x
x=625 minutes.
So anything under 625  minutes it is cheaper to use International Links
At 625 minutes, both bills are $112.50
-
check:
Look at 100 minutes. For IL, it is $18.
For WC it is $50+$10=$60.
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