Lexie began making posters for the school awards banquet. She can make 6 posters per minute. Zach joined her 10 minutes after she started. He can make 7 posters per minute. Lexie continued to make 6 posters per minute. Together, they made 125 posters. How many posters did zach make?
10 * 6 = 60 by the time Zach joins so 125-60 = 65 Now 6 (lexie) +7 (zach) = 13 (together) and 65/13 = 5. 6*5 = 30 and 7*5 = 35. 35+30 = 65 Your answer is 5.
