Ratkaisut esimerkkikysymyksiin
1. a) [[$ \frac{12}{60}=0,2=20\% $]]
b) [[$ \frac{5}{20}=0,25\rightarrow 1-0,25=0,75=75\% \,\text{pienempi} $]]
c [[$ \frac{42}{30}=1,4\rightarrow 1,4-1=0,4=40\% \,\text{suurempi} $]]
2. [[$ 7449\cdot1,032=7687,36...\approx7687 $]].
3. [[$ 1,36\cdot1,08\cdot a=1,36 \\ 1,08a=1 \\ a=\frac{1}{1,08}=0,925925...\\ 1- 0,9259=0,0741=7,4\% $]]
b) [[$ \frac{5}{20}=0,25\rightarrow 1-0,25=0,75=75\% \,\text{pienempi} $]]
c [[$ \frac{42}{30}=1,4\rightarrow 1,4-1=0,4=40\% \,\text{suurempi} $]]
2. [[$ 7449\cdot1,032=7687,36...\approx7687 $]].
3. [[$ 1,36\cdot1,08\cdot a=1,36 \\ 1,08a=1 \\ a=\frac{1}{1,08}=0,925925...\\ 1- 0,9259=0,0741=7,4\% $]]