The following pie chart shows the number of workers of different categories A,B,C,D,E,F,G,H in a factory in 1995
What is the central angle (angular value) for category B of the pie chart?
The table below shows number of calculators sold by 5 shopkeepers.
Shopkeepers | Calculator |
S1 | 40 |
S2 | 60 |
S3 | 55 |
S4 | 35 |
S5 | 80 |
Number of calculator sold by S5 is what percent of the number of calculator sold by S1?