Jason joined the military when he turned 18. It took him 8 years to raise to the rank of chief. Then 25% longer than that to go from chief to master chief. He then spent 10 years more in the military before retiring. How old was he when he retired? Think carefully first, then make a decision:
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It took 8 * .25 = 2 years longer to go from chief to master chief than to get chief. So it takes him 8 + 2 = 10 years to become a master chief. That means he took 10 + 8 = 18 years to reach master chief from enlisting. So he was in the military for 18 + 10 = 28 years. So he was 28 + 18 = 46 when he retired. So, the answer is 46.
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