Question

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.​

Answer 1

Answer:

792

Step-by-step explanation:

ok this is the answer

Answer 2

Let the marks scored by Shefali in Maths be ‘x’ and marks scored in English by Shefali will be

(30 – x). (x + 2) (30 – x – 3) = 210

(x + 2)(27 – x) = 210

27x – x2 + 54 – 2x = 210

-x2 + 25x + 54 = 210

-x2 + 25x + 54 – 210 = 0

-x2 + 25x – 156 = 0

x2 – 25x + 156 = 0

x2 – 13x – 12x + 156 = 0

x(x – 13) – 12 (x- 13) = 0

(x – 13) (x – 12) = 0

If x – 13 = 0, then x = 13

If x – 12 = 0, then x = 12

∴ x = 13 OR x = 12

∴ Shefali scores in Maths, x = 13

Shefali’s marks in English = 30 – x

= 30 – 13

= 17.