Question

3/4 de real vale ?
3/20 de real valem ?
4/25 de real valem ?
2 3/4 de real valem ?

Answer 1

3/4 de real = 0,75  = 75 centavos 
4/25 de real = 0,16 = 16 centavos
2 3/4 = 2,75 = 2 reais e 75 centavos