In a class test , the sum of shefali's marks in Mathematics amd 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 201. Find her marks in the two subjects.
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Let the marks in Maths be x.
Let the marks in Maths be x.Then, the marks in English will be 30 - x.
According to the given question,
(x + 2) ( 30 - x - 3 ) = 210
( x + 2 ) ( 27 - x ) = 210
→ - x² + 25 x + 54 = 210
→ x² - 25 x + 154 = 210
→ x² - 12 x - 13 x + 156 = 0
→ x ( x - 12 ) - 13 x - 156 = 0
→ ( x - 12 ) - 13 ( x - 12 ) = 0
→ ( x - 12 ) ( x - 13 ) = 0
→ x = 12, 13
If the marks in Maths are 12, then marks in English will be 30 = 20 = 18
If the marks in Maths are 12, then marks in English will be 30 = 20 = 18If the marks in Maths are 13, then marks in English will be 30 - 130 = 17
sabrinanandini2:
Awesome
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Hello your answer....
The answer is 18...
Thanks..
The answer is 18...
Thanks..
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