Question

Um objeto custa 15,00 passou a custar 24,00 Qual o percentual de aumento

Answer 1

i=24-15*100/15
i=9*100/15
i=900/15
i=60
Resposta: Aumento de 60%

Answer 2

$\mathtt{Regra~de~3:} \\ \\ \mathtt{R\ ~~~~~~~~~\%} \\ \mathtt{15~~~~~~~~100} \\ \mathtt{24~~~~~~~~~~x} \\ \\ \mathtt{15x = 100\times 24} \\ \mathtt{15x =2.400 } \\ \mathtt{x = 2.400 \div 15} \\ \mathtt{x = 160\% - 100\%} \\ \mathtt{x = 60\%} \\ \\ \\ \boxed{\boxed{\mathtt{Resposta : aumento~~60\%}}}$