90% students were present in school if 20students are absent then find total no.of students
Answers
Answer:
120 students were absent
Step-by-step explanation:
Total number of students = 1200
⇒⇒ 100% = 1200
.
Percentage of students that were absent:
100 - 90% = 10%
.
Find 10% (student that were absent):
100% = 1200
1% = 1200 ÷ 100 = 12
10% = 12 x 10 = 120
Answer:
The answer is 200
Step-by-step explanation:
% of students present = 90%
% of students present = 90%% of students absent. = 100% - 90%
% of students present = 90%% of students absent. = 100% - 90% =10%
% of students present = 90%% of students absent. = 100% - 90% =10%no of students absent=20
% of students present = 90%% of students absent. = 100% - 90% =10%no of students absent=20no of total students be x
% of students present = 90%% of students absent. = 100% - 90% =10%no of students absent=20no of total students be x10%of x = 20
% of students present = 90%% of students absent. = 100% - 90% =10%no of students absent=20no of total students be x10%of x = 2010/100 of x = 20
% of students present = 90%% of students absent. = 100% - 90% =10%no of students absent=20no of total students be x10%of x = 2010/100 of x = 201/10 of x = 20
% of students present = 90%% of students absent. = 100% - 90% =10%no of students absent=20no of total students be x10%of x = 2010/100 of x = 201/10 of x = 20 x= 20×10
% of students present = 90%% of students absent. = 100% - 90% =10%no of students absent=20no of total students be x10%of x = 2010/100 of x = 201/10 of x = 20 x= 20×10therefore x= 200
% of students present = 90%% of students absent. = 100% - 90% =10%no of students absent=20no of total students be x10%of x = 2010/100 of x = 201/10 of x = 20 x= 20×10therefore x= 200that is total no. of students = 200
% of students present = 90%% of students absent. = 100% - 90% =10%no of students absent=20no of total students be x10%of x = 2010/100 of x = 201/10 of x = 20 x= 20×10therefore x= 200that is total no. of students = 200Then no. of students present = no.of students - no. of absent
% of students present = 90%% of students absent. = 100% - 90% =10%no of students absent=20no of total students be x10%of x = 2010/100 of x = 201/10 of x = 20 x= 20×10therefore x= 200that is total no. of students = 200Then no. of students present = no.of students - no. of absent = 200- 20
% of students present = 90%% of students absent. = 100% - 90% =10%no of students absent=20no of total students be x10%of x = 2010/100 of x = 201/10 of x = 20 x= 20×10therefore x= 200that is total no. of students = 200Then no. of students present = no.of students - no. of absent = 200- 20 = 180