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Increase ��31 by 70% ???? i dont get or know how you do it

Verified Answer :

jhonyy9

using the rule of 3 simple 

31 mean 100%
x -------- 70%
------------------------

  x = 7031/100 = 731/10 = 217/10 = 21,7 

so this mean that 70% of 31 is 21,7 

increasing 31 by 70% will result 31+21,7 = 52,7 

hope helped

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