10% of 80

(a)  

10% of 250

(a)  

20% of 40

(a)  

60% of 20

(a)  

40% of 50

(a)  

70% of 30

(a)  

90% of 40

(a)  

5% of 40

(a)  

15% of 120

(a)  

15% of 60

(a)  

35% of 80

(a)  

55% of 40

(a)  

35% of 20

(a)  

105% of 240

(a)