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Mathematics, 08.12.2019 12:31 antwain2

Mary did 20 jumping jacks on monday, 30 jumping jacks on on tuesday, and 20 jumping jacks on wednesday.
how many jumping jacks did she do on all 3 days?

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Mary did 20 jumping jacks on monday, 30 jumping jacks on on tuesday, and 20 jumping jacks on wednesd...
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