Kia's salary increased from $900 to #1040. Calculate the fractional increment? Name one number which is neither prime nor composite

Question

show me the way

Answer 1

1040-900=140. This is the absolute increment. The fractional increment is 140/900=7/45 (15.56%).

Composite and prime numbers are all integers, so 1/2 is neither composite nor prime, because it's a fraction, and so is 7/45.