小兰:(24+18.48)÷36×11=12.98元;
小芳:(24+18.48)÷36×15=17.7元;
小明:(24+18.48)÷36×10=11.8元.
验算:12.98+17.7+11.8=42.48元; 24+18.48=42.48元.
小兰:(24+18.48)÷36×11=12.98元;
小芳:(24+18.48)÷36×15=17.7元;
小明:(24+18.48)÷36×10=11.8元.
验算:12.98+17.7+11.8=42.48元; 24+18.48=42.48元.