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The diagram below shows the arrangement of seats in the first three rows of an auditorium.

The diagram below shows the arrangement of seats in the first three rows of an auditorium-example-1
User Uvesten
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1 Answer

5 votes

Given


\begin{gathered} a=6 \\ n=15 \\ d=4 \end{gathered}

It is an arithmetic progression

Solution


T_n=a_1+(n-1)d

Substitute the given into the equation


\begin{gathered} T_(15)=6+(15-1)4 \\ T_(15)=6+(14)4 \\ T_(15)=6+56 \\ T_(15)=62 \\ \end{gathered}

The final answer

Option C


62seats

User Mdomino
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