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Martha jarred 6 liters of jam after 2 days. How many days does Martha need to spend making jam if she wants to jar 21 liters of jam in all? Assume the relationship is directly proportional.

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mumsy

Answer: 7

Step-by-step explanation:

if Martha jarred 6 liters of jam in 2 days,

she will jarred 3 litters of jam in one day

for 21 litters she will need 7 days

21/3=7

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