Question

Sai, Raju, Latha and Sravani are studying 9th class. In SA-I, Sai got 60 marks out of 80. The average marks of all four students is 48. If the average marks of Sai and Raju is 54 and the average marks of Sai, Raju and Latha is 42 then find the marks obtained by four students individually.

Answer 1

Let marks of Sai, Raju, Latha and Sravani be a, b, c, d.

From (2) and (3) 

(a + b + c) – (a + b) = 126 – 108 = 18 c = 18 

From (1) and (2)

(a + b + c + d) – (a + b + c) = 192 – 126 d = 66 

Given that a = 60° 

∴ Sai = 60 Marks 

Raju = 48 Marks 

Latha = 18 Marks 

Sravani = 66 Marks