Respuesta :
see its case of direct variations
let required loaf of bread be x
ratio of bread =ratio of days
6:7=x:21
x=21×6/7
x=3×6
x=18
see its case of direct variations
let required loaf of bread be x
ratio of bread =ratio of days
6:7=x:21
x=21×6/7
x=3×6
x=18