Respostas

2013-12-09T22:32:29-02:00
A) \frac{45}{100}. 180                         #Se vc quiser fazer com numero decimal
 \frac{8100}{100}                                  transforme a fração centesimal em decimal
81                                                                    e depois multiplique :                      
                                                                        Ex:  \frac{45}{100} = 0,45(.180)
b) \frac{80}{100} .150                              
 \frac{12000}{100}
120

c)  \frac{120}{100} . 35
 \frac{4200}{100}
42
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