Respuesta :
t + f = 25 bags
3t + 5f = 99 lbs
3t + 3f = 3 x 25
3t + 5f = 99
2f = 24
f = 12
t + 12 = 25
t = 13
3t + 5f = 99 lbs
3t + 3f = 3 x 25
3t + 5f = 99
2f = 24
f = 12
t + 12 = 25
t = 13