mika9209 mika9209

04-12-2016
Mathematics

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The train station clock runs too fast and gains 7 minutes every 4 days. How many minutes and seconds will it have gained at the of 10 days

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UweZwei UweZwei

04-12-2016

4 days 10 days Cross Multiplication
---------- = ------------
7 mins x

4x = 7*10
4x = 70
x = 70/4
x = 17.5

17.5 minutes = x

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