40% of 38 = 38*40/100 = 15.20 dollars
38
38 x 40 = 1520
95% 38/40
The HCF of 38 and 40 is 2
95 percent of 40 = 38 95% of 40 = 95% * 40 = 0.95 * 40 = 38
The GCF is 2.
38
I'm not real familiar with the 38-40, but based on what I looked up, I'm going to say no. The 38-40 cartridge uses a .40 caliber bullet, which means the chamber in a 38-40 handgun would be too large in diameter to properly/safely hold the .38 special.
40
Expressed as a decimal fraction, 38/40 = 0.95
Common factors of 38 and 40 are 1 and 2.