An Aspirant scored 98 in his 19th Mock CSAT and thus increases his average by 4. What is his average after the 19th Mock CSAT.
Options:
A .  22
B .  24
C .  26
D .  Cannot be determined
Answer: Option C : C Let the average score after 18th Mock CSAT be x. 1st Method:- Weighted Average: 18x+9819=x+4;x=22answer is x+4=26, option (c). 2nd Method:- Using Alligation Use the reverse gear approach now. Put X = 22; we will get 18: 1; answer is x + 4 = 26, option (c).
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