How do I solve this pre-cal word problem?

Posted by admin on February 19th, 2010 and filed under coffee tins | 1 Comment »

At a local grocery store, tins of coffee are stacked in a triangular formation for display. Each new row has 3 fewer tins than the row beneath it. If there are 9 rows and the top row contains one tin, how many tins of coffee are in the display?

1
4
7
10
13
16
19
22
25

There are 117 tins of coffee in total.

One Response

  1. Xue Says:
    February 19th, 2010 at 6:59 pm

    1
    4
    7
    10
    13
    16
    19
    22
    25

    There are 117 tins of coffee in total.
    References :

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