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Answer:

128 kids

125 adults

Step-by-step explanation:

X = number of kids

Y = number of adults

1.5X + 4Y = 692

X + Y = 253

4X + 4Y = 1012

(4X + 4Y = 1012) - (1.5X + 4Y = 692)

(4X - 1.5X) + (4Y - 4Y) = 1012 - 692

2.5X = 320

X = 320/1.5

X = 128 kids

253 - 128 = 125 adults