Answer: 4
Explanation:
Given that :
Number of needles = 16
Numbe of spools of thread = 12
The greatest Number of sewing kits that can be made is found by obtaining the Greatest Common factor of both number of threads and number of spool of thread;
Factor of :
16 : 1, 2, 4, 8, 16
12 : 1, 2, 3, 4, 6, 12
Hence, the greatest common factor = 4