scored by 4 students for a maths test
Rohan
Sanjay
S
Aditya
40
45
Answers
Answered by
1
Answer:
ᴛᴏᴛᴀʟ ᴍᴀʀᴋs = 170/200.
Step-by-step explanation:
40,40,45,45
Answered by
0
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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