An engineer who owns a construction company that specializes in large commercial projects no­ticed that material costs increased at a rate of 2% per quarter over the past 2 years. If a material cost index were created for that 2-year period with the value of the index set at 100 at the beginning of the period, what would be the value of the index at the end? Express your answer to two decimal places.

What will be an ideal response?


At 2% per quarter, annual increase = (1 + 0.02)? -1 = 0.1717 (17.17%)

Index value = 100(1.1717)
= 117.17

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