SSC CHSL 9 Jan 2017 Shift 3 Paper

Question : 66 of 100

Marks: +1, -0

Two students appeared for an examination. One of them secured 13 marks more than the other and his marks were 76% of the sum of their marks. The marks obtained by them are

19 and 6
34 and 21
102 and 89
92 and 79

Validate

Solution:

Let marks scored by 1st student = x
⇒ Marks scored by another student = (x + 13)
According to question, ⇒

(x + 13) = 76/100 ×(x + x + 13)

⇒

x + 13 =19/ 25 ×(2x + 13)

⇒

25x + 325 = 38x + 247

⇒

38x − 25x = 325 − 247 = 78

⇒

x = 78/13 = 6

∴ Marks scored by other student = 6 + 13 = 19

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