In a class test, the sum of marks obtained by P in Mathematics and Science is 28. Had he got 3 more marks in Mathematics and 4 marks less in Science, the product of marks obtained in the two subjects would have been 180? Find the marks obtained in two subjects separately (CBSE 2008)
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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 math mark is 13, then she got 17 in English.
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 math mark is 13, then she got 17 in English.
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1
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In a class test, the sum of marks obtained by P in Mathematics and Science is 28. Had he got 3 more marks in Mathematics and 4 marks less in Science, the product of marks obtained in the two subjects would have been 180? Find the marks obtained in two subjects separately (CBSE 2008)
_____________________________
Question in the attachment
Irrevalent will be reported
★Moderators
★Brainly Stars
★Other best users
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