Write a real-world problem that can be represented 10x+40=100

X=6 so...
I have to buy 100 apples, my friend bought 40 and there is 10 apples in a bag, how many bags of apples will i need to buy?
OR...
I have 40 purses, my goal is to have 100 purses. A store is selling purses in 1 pack of 10, how many packs of purses will i need to buy to get me to 100?

Solve :
 3 x 5 + 6 x 2 + 1 

Simplify promblem:

P.E.M.D.A.S's Rule

( 3 x 5 ) + ( 6 x 2 ) + 1
     V              V         V
    15      +    12   +   1
   {       27     +    1       }
                    V
                   28