cleopiggy421 cleopiggy421

21-11-2016
Mathematics

contestada

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

I dont understand how to do this Can someone help class=

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tcehcrhistie tcehcrhistie

21-11-2016

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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