Respuesta :
90% of what=22.5
90%=90/100=0.9
'of' means mutiply
0.9 times what=22.5
diide both sides by 0.9
what=25
the number si 25
90%=90/100=0.9
'of' means mutiply
0.9 times what=22.5
diide both sides by 0.9
what=25
the number si 25