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

Type of Helmet/Year 1998 1999 2000 2001 2002
A 78 45 56 63 88
B 58 64 78 60 68
C 46 54 58 64 68
D 76 65 72 78 82
E 87 66 74 80 84

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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