Step-by-step explanation:
1.
how many glasses of 0.32 liter can she fill ?
that means, how often does 0.32 fit into 1.45 ?
that is solved by division :
1.45 / 0.32 = 4.53125
so, she will need at least 5 glasses to completely empty the bottle. the 5th glass will be filled only partly, but that does not matter in that regard.
2.
he has 5.6 kg and adds 2.5 kg. that is 5.6 + 2.5 = 8.1 kg.
1 dough (that means 1 portion of dough as described by his recipe) uses 0.48 kg flour.
how many doughs can he make
so, again, how often does 0.48 fit into 8.1 ?
8.1 / 0.48 = 16.875
he can therefore make 16 full portions of dough. he does not have enough flour for a full 17th.
so, he uses
16×0.48 = 7.68 kg of flour for the 16 doughs.
and he has
8.1 - 7.68 = 0.42 kg of flour left.
