| 1. | Ifeighteen and two hundredthspercent of the volume of gas in a storage tank is oxygen, then all the other gases in the tank make up what percent of the volume of the gases in the tank?
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| | 2. | Katherine's mother is a nurse. She came to school to check our posture and our backs. She told us that about4.9% of children have a problem called scoliosis. There are two hundred eighty-two students in our school. If our school is like the average, how many children will have scoliosis? Express your answer to the nearest whole number.
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