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Directions: S tudy the data carefully and answer the question. The table given below shows data related to the number of children and adults (males : females) who joined swimming classes. Swimming Class Number of Children Number of Adults (Males : Females) A 42 3 : 4 B 56 1 : 5 C 28 3 : 5 D 0 3 : 7 E 70 2 : 3 F 14 4 : 5 Total 140 people joined each swimming class.

Find the approximate average number of adult males who joined swimming classes A, D and E together.

For class A, the total adults are 140 minus 42 children, equaling 98 adults; dividing by 7 parts gives 14, so there are 42 males. For class D, the total adults are 140 minus 0 children, equaling 140 adults; dividing by 10 parts gives 14, so there are 42 males. For class E, the total adults are 140 minus 70 children, equaling 70 adults; dividing by 5 parts gives 14, so there are 28 males. The total adult males for A, D and E is 42 plus 42 plus 28, equaling 112, and dividing by 3 gives an approximate average of 37.

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