if 45% of the students of a class have offered maths and 85% of them biology Find the percentage - Maths - Sets

Question

if 45% of the students of a class have offered maths and 85% of
them biology Find the percentage of students who offered biology
only

Devesh Kumar · Accepted Answer

Let the total no
 of students be 100
So we are given that 45% of the students are given maths and 85% of them are given Biology
So 45% means 45 students have maths
85% means 85 students have Biology
These Biology students have maths also
 So we need to find only bio students
so only Biology students will be 85-45=40 students
Percentage of students having Biology only=40100×100=40%<img alt=""
src=
"https://s3mn%20mnimgs%20com/img/shared/ck-files/ck_5568439a630c3%20png"
style="width: 1360px; height: 1136px;">

if 45% of the students of a class have offered maths and 85% of them biology. Find the percentage of students who offered biology only.