11) a. 50%
12) a. 85
13) b. 2
14) b. 2
15) c. 6
11) 20 = 100%
10 = 50%
12) 85% = 0.85
0.85 x 100 = 85
13) 8 hours = 100%
4 hours = 50%
2 hours = 25%
14) 40 pupils = 100%
20 pupils = 50%
10 pupils = 25%
2 pupils = 5%
15) P60 = 100%
P30 = 50%
P15 = 25%
P6 = 10%
P3 = 5%
Hope this helps.
#LearnWithBrainly