The following table shows the sale (in thousands) of different types of helmets by a shop over the given years:

Type of Helmet/Year19981999200020012002
A7845566388
B5864786068
C4654586468
D7665727882
E8766748084

What was the percentage increase in the sale of Helmets C in 2002 as compared to that in 1999?

A.

25.93%

B.

 26.39%

C.

 28.26%

D.

27.62%

Solution:

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