Japheth and Ahmad had 35 tarts altogether. After Japheth ate ¹₆ of his tarts and Ahmad ate 3 tarts, the number of tarts Ahmad had left was twice the number of tarts Japheth had left. How many more tarts did Ahmad have than Japheth at first?

	Japheth	Ahmad	Total
Before	6 u	10 u + 3	35
Change	- 1 u	- 3
After	5 u
Comparing Japheth and Ahmad in the end	1x5 = 5 u	2x5 = 10 u

The number of tarts that Japheth had in the end is the same. Make the number of tarts that Japheth had in the end the same.  LCM of 5 and 1 is 5.

Total number of tarts at first
= 6 u + 10 u + 3
= 16 u + 3

16 u + 3 = 35
16 u = 35 - 3
16 u = 32 

1 u = 32 ÷ 16 = 2

Number of tarts that Japheth had at first
= 6 u
= 6 x 2
= 12

Number of tarts that Ahmad had at first
= 35 - 12
= 23

Number of tarts that Ahmad had more than Japheth at first
= 23 - 12
= 11

Answer(s): 11