Question

In a class test the sum of Roop's mark in maths and English is 30 ,she had got 2marks more in maths and 3marks lesson in english the product of their marks would have been 210 find the marks in the two subject ​

Answer 1

Answer:

If her marks in Math is 12, then in English she got 18.

If math mark is 13, then she got 17 in English.

Step-by-step explanation:

Let the marks in Math be x and in English (30−x).

New marks in Math =2+x

New marks in English =27−x

(2+x)(27−x)=210

54−2x+27x−x  

2

=210

x  

2

−25x+156=0

x  

2

−12x−13x+156=0

x(x−12)−13(x−12)=0

(x−12)(x−13)=0

x=12,13