Annually, 20% of students ran 100 meters in the competition, 15% of students ran 200 meters, and 10% of students entered the long jump competition. 5% of the students enroll in all three. How many students did not enroll in Conneti as a student when the school had 780 students? (The corner image did not name the two at once).
Answers
Answer:
490
Step-by-step explanation:
20%780=156
15%780=117
10%780=78
5%780=39
total participated=156+117+78+39=390
780-390=490 not enrolled
Answer:
no of students in school = 780
no of students in 100 m race = 20 /100×780
= 156 students
no of Students in 200m race = 15/100 × 780
= 117 students
no of students in long jump = 10/100 × 780
= 78 students
no of students in enrolling = 5/100×780.
= 39 students
total no of students enroll in competition =
156 + 117 + 78 + 39 = 390
no of students didn't enroll in competition =
780 - 390 = 390 students
390 students didn't enroll in competition.