Answer:
33
Step-by-step explanation:
Total=7
8
4
+7
8
4
+8
8
6
+9
8
2
start text, T, o, t, a, l, end text, equals, 7, start fraction, 4, divided by, 8, end fraction, plus, 7, start fraction, 4, divided by, 8, end fraction, plus, 8, start fraction, 6, divided by, 8, end fraction, plus, 9, start fraction, 2, divided by, 8, end fraction
Hint #22 / 3
Let's add the whole numbers then add the fractions.
\begin{aligned} \text{Total}&=(7+7+8+9)+\left(\dfrac{4}{8}+\dfrac{4}{8} +\dfrac{6}{8}+\dfrac{2}{8}\right)\\\\ &= 31+\dfrac{16}{8}\\\\ &=31+2\\\\ &=33 \end{aligned}
Total
=(7+7+8+9)+(
8
4
+
8
4
+
8
6
+
8
2
)
=31+
8
16
=31+2
=33
Hint #33 / 3
Chelsea used 33 quarts of water on her garden.
from both sides
to 
