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  1. The total marks obtained by Arun in English and Mathematics are 170. If the difference between his marks in these two subjects is 10, then the ratio of his marks in these subjects is
    1. 7 : 8
    2. 8 : 7
    3. 9 : 8
    4. 9 : 7
Correct Option: C

According to the question,
E + M = 170      ....(i)
E – M = 10      ....(ii)
Adding both the equations,
2E = 180 ⇒ E = 90
From equation (i),
M = 170 – 90 = 80

∴ 
E
=
9
= 9 : 8
M8



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