10. The pie chart below shows the results of a survey done on the preferences of 700 movie viewers. Half of the viewers prefer Japanese and Korean movies.
a) How many viewers like to watch Japanese movies? [1m]
b) The ratio of the number of viewers who like American movies to the number of viewers who like Korean movies is 7 : 4. How many viewers like American movies? [2m]
50 – 20 = 30
100% -- > 700
30% -- > 30/100 x 700 = 210
a) 210 viewers like to watch Japanese movies.
7/4 x 20 = 35
35% -- > 35/100 x 700 = 245
b) 245 viewers like American movies.
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