the sum of the marks obtained by x in hindi and english is 80.If he got 20 marks more than hindi than English .The find the marks obtained by him in each?
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- let he got x marks in hindi and y marks in English.
- According to first condition, x+y=80........(1)
- according to second condition x=y+20,hence x-y=20.......(2)
- add equation (1) and (2.)
a+ b=80
+a-b=20
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2a=100
a=50
- put a=50 in equation( 1)
- a+b=80
- 50+b=80
- b=80-50
- b=30
- mark in hindi is 50 and English is 30
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