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KATRIN_1 [288]
3 years ago
10

I don't understand how to do this. Can someone help?

Mathematics
1 answer:
miskamm [114]3 years ago
3 0
Time used for the call to Zurich: ($5-$1.25)/$0.25=15 minutes
15minutes+3minutes=18minutes
Time used for the call to London: ($7.25-$1.25)/$0.25=24 minutes
24minutes+3minutes=27minutes
Difference between the two calls:27-18=9minutes
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