Answer:4.7 qt of liquid is needed. If doubled, 8/7 qts of liquid is needed. if halved, 2/7 qts of liquid is needed.
Step-by-step explanation:
Add the two amounts of liquid to get the total amount of liquid:
1/7 qt + 3/7 qt = 4/7 qt (cannot be simplified further)
To double the recipe, multiply the total liquid amount by 2.
4/7 * 2/1 = 8/7
To half the recipe, multiply the total liquid amount by 1/2.
4/7 * 1/2 = 4/14 --> 2/7
