Question

Escreva sob a forma de percentagem as frações: a) 4/5 b) 1/4 c) 3/25 d) 1/40

Answer 1

a) $<var>\frac{4}{5} = \frac{x}{100}\\\\ 400=5x\\\\ x=80\%</var>$ 

 

 

 

b) $<var>\frac{1}{4} = \frac{x}{100}\\\\ 100=4x\\\\ x = 25\%</var>$

 

 

 

c) $<var>\frac{3}{25} = \frac{x}{100}\\\\ 300=25x\\\\ x = 12\%</var>$

 

 

 

d) $<var>\frac{1}{40} = \frac{x}{100}\\\\ 100=40x\\\\ x = 2,5\%</var>$