Question

in class test the sum of shefails mark in maths and English is 30. had she got 2 mark more in mathematics and 3 mark less in English,the product of their marks would have been 210. find her marks in two subject

Answer 1

let, maths marks be as 'x'
and English marks be as 'y'
so given that
(x+2)(y-3)=210-----------1
from, x+y=30--------3
we got (x=30-y)--------2

substitute eq 2 in eq 1

(32-y)(y-3)=210
on solving you will get
y=17.5-------4
so substitute eq4 in eq3
from that x=12.5

so ,maths marks =12.5
English marks=17.5