In a mall, some toy planes and jigsaw puzzles were on sale. ¹₅ of the items were toy planes. ²₃ of the toy planes and 126 jigsaw puzzles were sold. There were ¹₆ of the items left in the mall. How many toy planes and jigsaw puzzles were there in the mall at first?

	Toy planes	Jigsaw puzzles	Total
Comparing toy planes  and jigsaw puzzles at first	1x6 = 6 u	4x6 = 24 u	5x6 = 30 u
Before	3x2 =  6 u		6x5 = 30 u
Change	- 2x2 = - 4 u	- 126	- 5x5 = - 25 u
After	1x2 = 2 u	3 u	1x5 = 5 u

 
The total number of toys at first is repeated.  Make the total number of toys at first the same. LCM of 5 and 6 is 30.

The number of toy planes at first is repeated.  Make the number of toy planes the same. LCM of 6 and 3 is 6. 

Number of jigsaw puzzles left
= 5 u - 2 u
= 3 u

Number of jigsaw puzzles sold
= 24 u - 3 u
= 21 u

21 u = 126

1 u = 126 ÷ 21 = 6

Number of toy planes and jigsaw puzzles at first
= 30 u
= 30 x 6
= 180

Answer(s): 180