Resposta :
15%
[tex] \frac{y}{100} \times 400 = 60 \\ \\ \frac{y}{100 {}^{ \div 100} } \times 400 {}^{ \div 100} = 60 \\ \\ y \times 4 = 60 \\ y = \frac{60}{4} \\ \\ y = 15[/tex]
15%
[tex] \frac{y}{100} \times 400 = 60 \\ \\ \frac{y}{100 {}^{ \div 100} } \times 400 {}^{ \div 100} = 60 \\ \\ y \times 4 = 60 \\ y = \frac{60}{4} \\ \\ y = 15[/tex]