The number of kids in group is 12
<em><u>Solution:</u></em>
Let "k" be the number of kids
Let "a" be the number of adults
Cost of 1 kid ticket = $ 4
Cost of 1 adult ticket = $ 6
<em><u>You take a group of 20 people going to the movies</u></em>
Therefore, we frame a equation as:
number of kids + number of adults = 20
k + a = 20 ----------- eqn 1
<em><u>Your total cost is $ 96</u></em>
Therefore, we frame a equation as:
number of kids x Cost of 1 kid ticket + number of adults x Cost of 1 adult ticket = $ 96
4k + 6a = 96 ---------- eqn 2
<em><u>Let us solve eqn 1 and eqn 2</u></em>
From eqn 1,
k = 20 - a ------ eqn 3
<em><u>Substitute eqn 3 in eqn 2</u></em>
4(20 - a) + 6a = 96
80 - 4a + 6a = 96
80 + 2a = 96
2a = 16
<h3>a = 8</h3>
<em><u>Substitute a = 8 in eqn 3</u></em>
k = 20 - 8
<h3>k = 12</h3>
Thus number of kids in group is 12