Respuesta :

Let, the number = x

Then, x * 30% = 21

x * 0.30 = 21

x = 21/0.30

x = 70

In short, Your Answer would be: 70

Hope this helps!
35231
30%x = 21 
x = 21/(30%) 
x = 21/(30/100) 
x = 21/(3/10) 
x = 21(10/3) 
x = 70

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