In a class of 42 students, the number of boys is 2/5 of the girls. The number of boys and girls in the class are ------ and ------ respectively.
a) 30,12
b) 12,30
c) 14 ,28
d) 28,14
Answers
Answer:
All my exams are conducted on the basis of MCQ, which is easy as well as time-saving.
Because descriptive answer writing is not so much good via online classes.
But in objective types of questions, you don’t need to write a long answer, just understand your question and mark your answer.
I think all universities, as well as schools, should understand this problem and make our education system better.
However, as we know, a few months ago our education policy became changed after 34 years by the new education policy 2020.
But this online classes also shows us some problem which we never consider, if this pandemic not happened.
Explanation:
Given,
u=10m/s
a=−2m/s
2
n=5
The distance covered by the particle in n
th
sec
S
n
=u+
2
a
(2n−1)
S
5
=10+
2
−2
(2×5−1)
S
5
=10−9
S
5
=1m
Answer:
option b is correct
Explanation:
let the number of girls be x
the number of boys = 2/ 5 x
total students in class = 42
therefore according to question
42 = x+ 2/5 x
42=7x/5
x=30
therefore number of girls in class = 30
and number of boys in class =(2/ 5 of 30)= 12
Hope it is helpful . plz mark as branliest