Question

0 valor do dolar,em real,subiu 10% num dia e 22% no outro dia.No intervalo desses dois dias o dolar subiu?

Answer 1

$Aumento\ no\ primeiro\ dia:\\\\ taxa_1=(1+0,1)-1\\\\ taxa_1=1,1-1\\\\ taxa_1=0,1\ (\ 10\%\ )\\\\ Aumento\ no\ segundo\ dia, teremos\ a\ taxa\ total:\\\\ taxa=(1+0,1)\times (1+0,22)-1\\\\ taxa=1,1\times1,22-1\\\\ taxa=1,342-1\\\\ taxa=0,342\ (\ 34,2\%\ )$

Nos dois dias, o dólar subiu 34,2%.


Bons estudos!