Question

there are 10 student in class 12 some are math and some are bio student the number of bio stdent are 4 more than math student find the the number of math and bio student

Answer 1

Answer:

students who study maths = 3

students who study biology = 7

Step-by-step explanation:

assume that students who study maths are 'a' in number

so, students who study biology will be 'a+4'

total student =10

then,

a+a+4 = 10

2a+4 = 10

2a = 10-4

2a = 6      =>   a = 6/2 =3

students who study maths = a = 3

students who study biology = a+4 = 3+4 = 7