Answer:
76 fl. oz. (see below)
Explanation:
With the info:
(Jack) begin: 48 fl. oz.
end: 3/4 of 48 fl. oz.
(Jill) begin: 48 fl. oz.
end: 2/3 of 48 fl. oz.
(Bill) begin: 48 fl. oz.
end: 1/6 of 48 fl. oz.
How much they spilled (sum):
First, find the amounts they spilled individually:
(Jack) (3/4) (48) = how much spilled
= 144/4
= 36 fl. oz.
(Jill) (2/3) (48) = how much spilled
= 96/3
= 32 fl. oz.
(Bill) (1/6) (48) = how much spilled
= 48/6
= 8 fl. oz.
36 + 32 + 8 = 76 fl. oz. spilled