Jenna need 2 days to make jam if she wants to jar 12 litres of jam in all.
Step-by-step explanation:
The equation shows the amount of jam Jenna has jarred is related to the number of days she has spent making jam.
[tex]j=6d[/tex]
where j represents the amount of jam jarred and d represents the number of days spent making jam.
To find the number of days that Jenna will need if she wants to jar 12 litres of jam is to substitute [tex]j=12[/tex] in [tex]j=6d[/tex]
[tex]12=6d[/tex]
Dividing 6 on both sides, we get,
[tex]2=d[/tex]
Thus, Jenna need 2 days to make jam if she wants to jar 12 litres of jam in all.