అర్థమేటిక్ & రీజనింగ్ గ్రూప్
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Atla ivvadu kavacchu endhukante atla chesthe andarini AR to CIvil. Tssp to AR poye vallu chala untaru meelaga
Let boys score b, girls score g
(g/30)-(b/20)=5
Avg of class=(b+g)/50
Now new scores boys B, girls G
(g/30)-(G/30) =3
(B+G)/50 -(b+g)/50 =2
G=g-90
So, B=B+190
Now avg of boys=(b+190)/20 =b/20 +9.5
Avg increase by 9.5☑️
