Two machines at a factory are filling cans of soup. One machine has already filled 180 cans of soup, and fills cans at a rate of 15 per minute. The second machine has already filled 210 cans of soup, and fills cans at a rate of 12 per minute. Write an equation to show when the two machines will have filled the same number of cans of soup. Use a as your variable. (1 point)
O 12r-- 210 152- 180
О 210 - 127 = 180 - 152
O 12 + 180 = 15 + 210
O 12 + 210 = 15 + 180
The correct equation to show when the two machines will have filled the same number of cans of soup is:
15a + 180 = 12a + 210