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Total percentage warranty $=$ Claims in second year $+$ claims in third year $+$ claims in fourth year $+$ claims in fifth year

$=1\mathrm{.}00+2\mathrm{.}00+2\mathrm{.}00+3\mathrm{.}00$

$=8$

Could you explain why this is $8\%$ when we are looking only for the first three years