Question

1/4 de 100 reais
3/7de 280 laranja

Answer 1

100 Reais=25
Laranja=120

Answer 2

1/4  de 100 = 1/4 x 100 = (1 x 100)/4 = 100/4 = 25

3/7 de 280 = 3/7 x 280 = (3 x 280)/7 = 840/7 = 120

Espero ter ajudado.