In certain examination. a total of4788 students secured first class in the year 2015 and2. 2017. The number of first class in 2017 exceed those in 2015 by 44 . How many students got first class in 2015?
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let the student in the year 2017 be- X
let the students in 2015 be -Y
given that
X+Y=4788
and the number of first class in 2017 exceed those in 2015 by 44 so,
X=Y+44
keep this in the fisrt eq i.e,X+Y=4788
Y+44+Y=4788
Y=2372
therefore the no.of students who got firstclass in 2015=2372
let the students in 2015 be -Y
given that
X+Y=4788
and the number of first class in 2017 exceed those in 2015 by 44 so,
X=Y+44
keep this in the fisrt eq i.e,X+Y=4788
Y+44+Y=4788
Y=2372
therefore the no.of students who got firstclass in 2015=2372
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