If a shopkeeper sold 15 boxes of pencils on Mon and Tues. He sold 3 more boxes on Mon then on Tues. There were 12 pencils in each box. How many pencils did he sell on Monday.

Answer 1

M + T = 15

M = T + 3
--------------
2 T + 3 = 15

T = 6 boxes on Tues
so
9 boxes on Monday
9*12 = 108

Answer 2

thank you very much damon!

Answer 3

You are welcome :)

Answer 4

How did you get the answer 9 on Monday and 6 on Tuesday? Why Monday couldn’t be 10 and Tuesday couldn’t be 5?