In a children's park, the ratio of the number of adults to the number of children is 1:4. After five minutes, 1 adult and 10 children came. The ratio became 1:5. What was the original number of adults?
+37170 Adults of the original number of people (x) = 1 out of (1+4) = 1/5 x
Children originally = 4/5 x
then add 1 adult and 10 children
(1/5 x + 1)/ (4/5x +10) = 1/5
solve for x = 25 the original number of people 1/5 were adults = 5 adults originally
