Question

2) Se dois, quintos de uma quantia representam R$ 100,00, quanto representa três quintos dessa mesma quantia? a) R$ 50,00 b) R$ 100,00 C) R$ 150,00 d) R$ 200,00 e) R$ 250,00​

Answer 1

Explicação passo a passo:

2/5 >>>>>>>>>>>>>>>>>>100

3/5 >>>>>>>>>>>>>>>>>> x

corta denominadores 5

2>>>>>>>>>>>>>>>>>>>>> 100

3 >>>>>>>>>>>>>>>>>>>>> x

2/3 = 100/x

cruzado

2 * x = 3 * 100

2x = 300

x = 300/2 = 150 >>>>>>