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35. In a class test, the sum of Shefali's marks in Mathematics and English is 30. Had she got2 marks more in Mathematics and 3 marks less in English, the product of their markswould have been 210. Find her marks in the two subjects.TC1 |
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Answer» 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. |
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