The stock market report says that 5 stocks went up for every 6 stocks that went down. If 666 stocks went down yesterday, how many went up? Set up and solve a proportion for the problem.
Let x be the number of stocks that went up.
The proportion can be set up as follows:
5/6 = x/666
To solve for x, cross multiply:
6x = 5(666)
6x = 3330
x = 3330 / 6
x = 555
Therefore, 555 stocks went up yesterday.