A Shopkeeper sold a total of 15 boxes of pencils on Monday and Tuesday. He sold 3 more boxes on Monday than on Tuesday. There were 12 pencils in each box. How many pencils did he sell on Monday?

1 answer

Let x = the number of boxes sold on Monday.

x + x - 3 = 15
2x = 18
x = 9

9 * 12 = ?