MBA Exam

P and Q are two solutions of alcohol in kerosene. The solution P is 90% in kerosene and the solution Q is 30% in alcohol. What amount of solution Q should be added to 100 liters of solution P so that the resulting solution is 25% in alcohol?​plz tag me...

1) 400
2) 200
3) 300
4) cod

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MBA Other Question
What is the remainder when 20! is divided by 2^20

1) I guess OA is 2^18, but thats not important, tell me how u did it...
 ABS(x) means abstract value of x. ABS(3)=3, ABS(-3)=3. If ABS(x-5)+ABS(x-12)=r for infinite number of values of x.How many values of r are possible?QA not available :/

1) 12
2) 6
3) -
4) no such r