Respuesta :
a 25% increase is 500
step 1: 25%= .25
step 2: 400 times .25 = 100
step 3: 400 + 100= 500
therefore your answer would be 500
step 1: 25%= .25
step 2: 400 times .25 = 100
step 3: 400 + 100= 500
therefore your answer would be 500