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25-05-2019
Mathematics

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In 20 years Mary will be three times as old as she is now. How old is she now?

Respuesta :

123kiwi 123kiwi

25-05-2019

Mary is 10 yrs old now.

Explanation:

10+20=30

30÷3=10

So, Mary has to be 10yrs old now.

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