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?

Monday + Tuesday = 15

(x+3)+x = 15
2x=12
x=6...... boxes of Tuesday
x+3=9..... boxes of monday
9x12= 108 pencils that he sold on Monday

I gave you part of the answer. He sold 6 boxes on Tuesday.

How many boxes did he sell on Monday?

Multiply that answer by 12 to find the number of pencils he sold on Monday.

I get the answer now. This is so hard. I need to think a lot.

15boxes - 3boxes = 12 boxes left
12 boxes left / 2days= 6 boxes each
6 boxes each + 3more boxes =9 boxes on Monday
so multiply 9 with the 12 pencils. So you will get the answer.

I get the answer now. This is so hard. I need to think a lot.

15boxes - 3boxes = 12 boxes left
12 boxes left / 2days= 6 boxes each
6 boxes each + 3more boxes =9 boxes on Monday
so divide 9 with the 12 pencils. So you will get the answer.

This is 2 hard

not understanding much, and you give me another example

x + x + 3 = 15

2x = 12

x = 6 boxes on Tuesday

Take it from there.