The average marks scored by Ravi in English, Science, Mathematics and History is less than $15$ from that scored by him in English, History, Geography and Mathematics. What is the difference of marks in Science and Geography secured by him?

40

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50

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60

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Data inadequate

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None of these

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Solution

The correct option is C $60$
$E$ =Marks scored in English
$S$ =Marks scored in Science
$H$ =Marks scored in History
$G$ =Marks scored in Geography
$M$ =Marks scored in Mathematics
Given,
$\frac{E + S + M + H}{4} - \frac{E + H + G + M}{4} = 15$
=> $E + S + M + H - (E + H + G + M) = 15 \times 4 = 60$
=> $S - G = 60$

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The average marks scored by Ravi in English, Science, Mathematics and History is less than 15 from that scored by him in English, History, Geography and Mathematics. What is the difference of marks in Science and Geography secured by him?

The correct option is C 60E=Marks scored in EnglishS=Marks scored in ScienceH=Marks scored in HistoryG=Marks scored in GeographyM=Marks scored in MathematicsGiven, E + S + M + H4− E + H + G + M4=15 => E + S + M + H−( E + H + G + M)=15×4=60=> S−G=60

The average marks scored by Ravi in English, Science, Mathematics and History is less than $15$ from that scored by him in English, History, Geography and Mathematics. What is the difference of marks in Science and Geography secured by him?