18 glasses of water
3.6/.2=18
26% less than a value is best found by multiplying by (100 - 26)% = 74% = 0.74
So previous year x 0.74 = 40,700
Previous year = 40,700 / 0.74 = $55,000
-64/3 divide -64 by 3
-21.33333333333333333
or
-21 1/3
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