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21-03-2016
Mathematics

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Today 13 athletes were tested for steroids. Yesterday three times as many athletes were tested. How many athletes were tested in all?

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apologiabiology apologiabiology

22-03-2016

13 were tested
today 3 times as much as yesterday was tested
3 times 13=39

how many tested total
13 today
yesterday 39
total=today+yesterday
total=13+39
total=52

52 were tested

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