admission to a park is $5 for an adult ticket and $1 for a child. If $100 was collected and 28 admissions were sold on a day, how many tickets were sold and how many child tickets were sold

Answer 1

Let x = adult and Y = child tickets.

x + y = 28

x = 28 - y

5x + y = 100

Substitute 28-y for x in third equation and solve for y. Insert that value into the first equation and solve for x. Check by inserting both values into the third equation.

Answer 2

from a board 38 1/2 inches long pete cut a piece 17 5/8 inches long how long was the remaining piece