Matthew is on the swim team every week she swims 20 miles if you practices for days each week and swims the same number of miles each practice how many miles does he swim each day

There are a total sales of 2,000 dollars on monday on tuesday sales dropped 10% on wednesday sales dropped another 20% compared with tuesday from wednesday to thursday sales increases by an equal amount to 25% of monday total sales what is the net change in dollars on total sales from monday to tuesday