Question

Lily used 6 loaves of bread on a 7 day camping trip. How many loaves of bread will she use on her next camping trip that will last for 21 days? ​

Answer 1

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

Answer 2

18

Explanation: