a)
100zl = 100*100gr = 10000gr
1zl 60gr = 160gr
[tex]10000gr = 100\%\\160gr = x\\x=\frac{160gr*100\%}{10000gr}\\x=\frac{16*1\%}{10}=\frac{16\%}{10}=1,6\%[/tex]
Odp. 1zl 60gr to 1,6% z 100zl
b)
1 godzina = 60*60s=3600s
2min 42s = 2*60s+42s=120s+42s=162s
[tex]3600s=100\%\\162s=x\\x=\frac{162s*100\%}{3600s}=\frac{162*1\%}{36}=\frac{162\%}{36}=4,5\%\\[/tex]
Odp. 2 min 42 s to 4,5% z 1 godziny
c)
1t = 1000*100dag=100000dag
25kg 25dag = 25*100dag+25dag=2500dag+25dag=2525dag
[tex]100000dag = 100\%\\2525dag = x\\x=\frac{2525dag*100\%}{100000dag}=\frac{2525*1\%}{1000}=\frac{2525\%}{1000}=2,525\%[/tex]
Odp. 25kg 25day to 2,525% z 1 tony
d)
50kg=50*100dag=5000dag
2kg 30dag = 2*100dag+30dag=200dag+30dag=230dag
[tex]5000dag = 100\%\\230dag = x\\x=\frac{230dag*100\%}{5000dag}=\frac{23*1\%}{5}=\frac{23\%}5=4,6\%[/tex]
Odp. 2kg 30dag to 4,6% z 50kg
