Wagneraidan Wagneraidan

10-02-2016
Mathematics

contestada

25% of =15 what is in the blank?

Respuesta :

10-02-2016

It seems to me that the 'blank' is after 'of', and
you're looking for the number that 15 is 25% of.

OK. Call it 'M' (for 'Mystery number')

25% of M = 15

' 25% ' means 0.25 .
and
' of ' means 'times'.

So 0.25 M = 15

Divide each side by 0.25: M = 60 .

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