Problema 1
8/8 - 3/8 = 5/8
5/8 = 100
1/8 = 100 ÷ 5 = 20
8/8 = 20(8) = 160
7/7 - 3/7 = 4/7 = 160
1/7 = 160 ÷ 4 = 40
7/7 = 40 × 7 = 280
Respuesta:
Tenía S/. 280
Problema 2
5/5 - 3/5 = 2/5 = 60
1/5 = 60 ÷ 2 = 30
5/5 = 30 × 5 = 150
150 - 60 =90
150 + 90 = 240
Respuesta:
Opción c)
Problema 3
7/7 - 4/7 = 3/7 = 90
1/7 = 90 ÷ 3 = 30
7/7 = 30 × 7 = 210
5/5 - 2/5 = 3/5 = 210
1/5 = 210 ÷ 3 = 70
5/5 = 70 ÷ 5 = 350
Respuesta :
Opción b)
Espero haberte ayudado