Tiffany baked 14 trays of shortbreads. There were 12 shortbreads in each tray. She gave ¹₄ of the shortbreads to her aunty and ⁷₉ of the remainder to Japheth. She then packed the rest of the shortbreads equally into 7 boxes. How many shortbreads were there in each box?
Total number of shortbreads that Tiffany baked
= 14 x 12
= 168

Fraction of the shortbreads left after Tiffany gave to her aunty
= 1 - ¹₄ 
=  ³₄ 

Number of shortbreads left after Tiffany gave to Japheth
= ³₄ x 168
= 126 

Fraction of the remaining shortbreads left after Tiffany gave to Japheth
= 1 - ⁷₉ 
=  ²₉ 

Number of shortbreads that Tiffany packed into 7 boxes
= ²₉ x 126
= 28

Number of shortbreads in each box
= 28 ÷ 7
= 4

Answer(s): 4