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The attendance for the first night of a play is 455. The attendance increases by 16 on each of the next 9 nights.

What is the total attendance for the 10 nights?

 Mar 25, 2019
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First night =   455

Last night = 455 + 9(16)  = 599

 

Sum =

 

[ first night + last night ] * number of nights / 2  =

 

[ 455 + 599 ] * 10  / 2  =

 

1054 * 5 =

 

5270

 

cool cool cool

 Mar 25, 2019

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