CBSE Class 10 Answered
quadratic equations...
Asked by deepitapai | 26 Jan, 2009, 08:02: AM
Expert Answer
Let the marks in maths=xx
marks in science =y
According to question,
x+y=30, which means that y=30-x
If she'd got 2 marks more in maths it would have been=x+2
If she had got 3 marks more in scence it would have been =y+3
So,
(x+2)*(y+3)=210
So, we will have
(x+2)*(30-x+3)=210
(x+2)(33-x)=210
Answered by | 26 Jan, 2009, 01:16: PM
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