Question

What is 40% of 400 Show work

Answer 1

40% of 400 would be 160.
40% is 0.4 
so
0.4*400 = 160
to prove my work
400/160 = 0.4 = 40%

Answer 2

40% of 400
percent means parts out of 100
40%=40/100=0.40

'of' means multiply
40% of 400 means
0.4 times 400=160

there's an easier way to do it
40% of 100=40
times 4 both sides
40% of 400=160