Final answer:
Approximately 37 students participated in the sack race.
Step-by-step explanation:
To find the number of students who participated in the sack race, we need to calculate 15% of the total number of students.
First, we need to find the total number of students. Let x be the total number of students.
We know that 60% participated in a basketball game and 100 took part in a ring toss.
So, the number of students who participated in the basketball game is 0.60x and the number of students who took part in the ring toss is 100.
Now, we can set up an equation to find the total number of students:
0.60x + 100 = x
Solving for x:
x - 0.60x = 100
0.40x = 100
x = 100 / 0.40
x = 250
Therefore, there are 250 students in total. Now, we can calculate the number of students who participated in the sack race:
=> 15% of 250
= 0.15 * 250
= 37.5
Since we can't have a fraction of a student, we round down to the nearest whole number. So, approximately 37 students participated in the sack race.