Answer: 
Step-by-step explanation:
Given
A gym owner has purple and white weights that measure 10 kg and 6 kg each
respectively.
They weigh 84 kg in total
suppose there x purple and y white weights


Thus, there are 3 purple and 9 white weights.
The 1 is in the hundreds place good luck!!!
There were 15 gallons of water to begin with. hope this helps
Check the picture below.
make sure your calculator is in Degree mode.
does it meet the requirements? well, 3.43 < 4.8.