Question

3
5. In a class test, the sum of Shefali's marks in Mathematics and English is 30. Had she got
2 marks more in Mathematics and 3 marks less in English, the product of their marks
would have been 210. Find her marks in the two subjects.
TC1​

Answer 1

Answer:

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

If maths 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

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

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

Answer 2

Answer:

It is the correct answer.

Step-by-step explanation:

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