Stacy rolls a pair of six-sided fair dice. the probability that the sum of the numbers rolled is either a multiple of 3 or an even number is , and the two events are exclusive.

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