Respuesta :
in 30 minutes he reads 3/5 of the bookΒ
so in 1 minute he reads 3/5 / 30 Β = 3/150 = 1/50
in 40 minutes he will read 40Β * 1/50Β Β Β = 4/5Β
4/5 of the book
so in 1 minute he reads 3/5 / 30 Β = 3/150 = 1/50
in 40 minutes he will read 40Β * 1/50Β Β Β = 4/5Β
4/5 of the book