Question

in a class test the sum of shefali's marks is mathematics and English is 30 had she got 2 marks more in mathematics in english the product of their marks would have been 210 .find her marks in two subject
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Answer 1

Answer:marks in Maths=12 and marks in English=18 or marks in Maths=13 and marks in English=17

Step-by-step explanation:

Given, marks in Maths+marks in English=30

Let the marks got in maths be x

Then marks got in English will be 30-x

Now, if she had got 2 more marks in Maths then her marks will be (x+2)

And if she had got 3 marks less in English then his Mark's will be (30-x-3)=27-

Now their product is 210

Therefore, (x+2)(27-x)=210

= 27x-x²+54-2x=210

25x-x²+54=210 (×(-1))

x²-25x-54=(-210)

x²-25x+156=0

ax²+bx+c=0

a=1, b=(-25), c=156

Sum=b=(-25)

Product=(a×c)=156

x²-13x-12x+156=0

x(x-13)-12(x-13)=156

(x-13)(x-12)=0

Therefore,x=12 or x=13

Therefore,marks in Maths=12 and marks in English=18 or marks in Maths=13 and marks in English=17

Hope it helps, All the best :)

Answer 2

Answer:

It is the correct answer.

Step-by-step explanation:

Hope this attachment helps you.