SOLUTION: the average marks of Deanne in four subjects is 68. How much marks should she score in first subject to get average score as 70.

Question 947546: the average marks of Deanne in four subjects is 68. How much marks should she score in first subject to get average score as 70.
Answer by andora(7) (Show Source): You can put this solution on YOUR website!
Let's assume x is the score in 4 subjects
so it goes like
x/4=68
So x=4*68=272
To make it 70 we'll assume y as the score in four subjects she should aim to
Y/4=70
Y=4*70=280
So Deanna should increase her marks in the first subject 280-272=8 marks
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