Respuesta :

84 = n × 24%
84 = n × 0.24             (24% = [tex] \frac{24}{100} [/tex] = 0.24)
Divide by 0.24 to isolate the unknown number n
[tex] \frac{84}{0.24} = \frac{0.24n}{0.24} [/tex]
0.24 and 0.24 cancels out
350 = n

Check: 
350 × 0.24 = 84

84 is 24% of 350