Question

There were some blue and yellow chairs arranged for a concert. The blue chairs were arranged in 36 rows with 131 chairs in each row. The yellow chairs were arranged in 34 rows with 135 chairs in each row. How many chairs were arranged for the concert altogether?​

Answer 1

blue chairs = 36*131 = 4716

yellow chairs = 34*135 = 4590

So, there are 4716+4590 = 9306 chairs at the concert.