向群连锁店十月份的营业额是34.5万元,比九月份营业额增加了4.5万元,十月份的营业额比九月份增加了百分之几?3n0B*a9H;V:D1D:f1Z;^'O(z-F0w2p
解:
算式:提示,z-k5d5\+M+|'J4Y'F0Y8}5W2|+f3n0B*a9H;V:D1D:f1Z;^'O(z-F0w2p
答:十月份的营业额比九月份增加了9X5P)y-z)V;D-P2F9U5y9A)~。3n0B*a9H;V:D1D:f1Z;^'O(z-F0w2p