Raul is building a house On day 1, he uses 3 bags of cement On each of the following 3 days, he uses 3 times the number of bags used the previous day How many bags of cement does he use in the last 3 days?

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The given situation above is an example of a geometric sequence with first term equal to three and the common ratio equal to 3. For the second day, Raul used 9 bags of cement. He used 27 bags on the third and 81 on the fourth. To answer the question, add the number of bags from second to fourth day. The answer is equal to 117 bags of cement. 

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