Question 65
The following pie chart gives the central angles of the sectors representing the number of cameras sold from a shop from July to November in a certain year.
What percentage are the sales in July of the total sales from July to November?
Solution
percentage = $$\frac{45^{\circ\ }}{\left(45+50+80+90+95\right)^{\circ\ }}\times100$$
= $$\frac{45^{\circ\ }}{360^{\circ\ }}\times100$$
= $$\frac{1}{8}\times100$$
= 12.5%
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