They both looked at the total: 1,200. It felt like a puzzle where they finally had the last piece. "So," Anya smiled, "we just subtract the 770 from the total. "

"Okay," Maxim whispered, "Problem number five. A factory produced 1,200 bricks in three days. On the first day, they made 350. On the second day, they made 70 more than the first. How many did they make on the third?"

Anya grabbed her pencil. "First, we need to find the second day. That’s bricks."

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