On a rainy day,4/15 of the whole stregth of a class was absent and 3/4 of those present,brought a rain coat .How many did not bring a raincoat , the total strength of the class being 180?
[Answer is 33]
Answers
Answer:
33
Step-by-step explanation:
Given the total strength of the class being 180.
Class Strength = 180
Given 4/15 of the whole strength of a class was absent.
Absent on a rainy day
= 4/15 of 180
= 48
Find the number of students present.
Present on a rainy day
= 180 - 48
= 132
Given 3/4 of those present brought a rain coat.
Brought raincoat
= 3/4 of 132
= 99
Find the students who did not bring raincoat.
Did not bring raincoat
= 132 - 99
= 33
Answer: 33 of the the students present did not bring raincoat.
Answer:
33 students
Step-by-step explanation:
On a rainy day, 4/15 of the class was absent.
Therefore Number of students present = 1 - 4/15 = 11/15
Number of students present = 11/15 × 180 = 11 × 12 = 132 students
Hence on that day 132 students were present.
Out of that 3/4 of the students brought their raincoats. So number of students who did not bring their raincoats were:
⇒ 1 - 3/4 = 1/4
⇒ 1/4 × 132 = 33 students
Hence 33 students did not bring their raincoats.