50% - 

$$ {1} \over {2} $$

10% - 

$$ {1} \over {10} $$

1% - 

$$ {1} \over {100} $$

1% of 240 - 

2.4

50% of 240 - 

120

10% of 240 - 

24

100% of 205 km - 

205 km

50% of 205 km - 

102.5 km

10% of 205 km - 

20.5 km

1% of 205 km - 

2.05 km

one-half - 

50%

one-quarter - 

25%

one whole - 

100%

three-quarters - 

75%

25% of 100 - 

25

25% of 88 - 

22

25% of 200 - 

50

25% of 160 - 

40

25% of 140 - 

35

50 % of 120 km - 

60 km

10% of 120 km - 

12 km

70% of 120 km - 

84 km

20% of 120 km - 

24 km

5% of 120 km - 

6 km