ANSWERS - HURDLE 11: EFFECT OF CHANGE OF % ON NUMBERS

Ans1. Option D

Ans2. Option B

Ans3. Option C

Ans4. 370

Ans5. 450

Ans6. 490

Ans7. 530

Ans8. 570

Ans9. 650

Ans10. 20%

Ans11. 60 %

Ans12. 40%

Ans13. 70 %

Ans14. 2050

Ans15. 2650

Ans16. 2250

Ans17. 2580

Ans18. 2280

Ans19. 2650

Ans20. D , Ans21. F , Ans22. J , Ans23. K , Ans24. M , Ans25. N ,

Ans26. D ,

Ans27. B

Ans28. None of the statement is true

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HERE ARE SOLUTIONS OF SOME OF THE QUESTIONS, THE REST MAY BE SOLVED USING THE SAME METHOD.

Ans1 . 1,2, and 4 are not possible. So answer is option D.
Statement 1 : I gave 5 mangoes each to 5 of my friends and balance 15 % to my 6th friend.
5 mangoes to 5 friends means 25 mangoes. so that means 25 mangoes is 85 % of certain number. So the total mangoes will
come to be 100*25/85 = 29.41 which is not possible as it should be a whole number.
Statement 2 : I gave 10 mangoes each to 5 of my friends and balance 40 % to my 6th friend.
10* 5 = 50 .
50 is 60 % of certain number . So total mangoes = 83.33. Again not possible.
Statement 3 : I gave equal number of mangoes to all my friends and still have 5 % balance with me.
This is possible. Example I have 600 mangoes, I give 95 each to 6 friends , I have balance 30 mangoes which is 5 %.
Statement 4: To 5 of my friends, I give 20 % of mangoes each. Each of my 5 friends give 50 % of their share to the 6th friend. All the six friends have same number of mangoes.
Let the total number be X. 5 friends get X/5 each.
Sixth friend get 5*X/10 = X/2 that is 50 %. and each one get 10 %.
The only possibility is when X = 0 , but when in the question it is said " I have certain number of mangoes" 0 can be ignored.

Ans2 . Option B. Statement a is not possible.

a) If you add 7 to the result, you get a negative number. Not possible. prime numbers are positive. 20 % of positive number
is positive . positive number +7 is positive. (Urpercentile.com)
b) If you add 7 to the result, you get a composite number. 5* 20/ 100 = 4. 4 +7 = 11. 11 is composite number.
c) If you add 7 to the result, you get a rational number. Possible
d) If you add 7 to the result, you get a prime number. 5* 20/100 = 4. 4 +7 = 11. 11 is prime number.
e) If you add 7 to the result, you get a whole number. Possible.

Ans3. 40. When 4 friend give you 10 back , you must have distributed at least 40 as they had none at the starting.
(UrPercentile.com)

Ans5. 272+43= 315.
70 % of X = 315
so X= 450.

Ans12. 416+22= 438.
730 -730.X%/100 = 438
X=40

Ans13. 770 – (208+23) = 539 = > 70%

Ans14. 3109-239=2870
140X/100=2870
so X=2050.

Ans15. 2650 (1.12x+320= 3288)

Ans16. 2878-47 = 2925
130X/100=2925
X=2250

Ans19. Final Total = 2895. Since 41 is removed and 21 added, we get 6th day total as 2915.
To get the total on 5th day,  1.1x = 2915 => x = 2650.
Though when we proceed to the 4th day by this method, 2650/ 1.1 will not yield a whole number , but if you write 2650 as the
answer it will fetch you the marks. (Pointed out by Praveen 85, thanks. )  

Ans26 . Read :
1. ....it allowed overseas investors to invest up to 51 per cent in single-brand products retailing without having to seek prior
approval.
COMMENTS : 51 per cent not 100.
2. After repeatedly postponing deadlines for deciding on the bids, the Government could not come out unscathed. A legal
challenge has been mounted by one of the unsuccessful bidders, Reliance (Anil Ambani group), which had made the
highest financial bid.
COMMENT : So There was a winner of the bid, reliance was unsuccessful and was not happy about it.

Ans27. Read starting of 6th Paragraph : Legal challenges are perhaps inevitable in such processes where the stakes are high
for the bidders as well as the Government. Author describes the legal challenges as not avoidable , So Option B is the correct
option.

Ans28. None of the statement is true
Read :
" But customers at large, not just the chosen few, must feel the benefit. Armed with technology banks have been pursuing a
policy of customer-segmentation more vigorously than ever before. Customers with fairly low balances and the smaller of
the borrowers have been feeling left out.
Technology might have shifted decision-making powers to the head office,
A naïve belief that technology spend is an end in itself might have made some financial institutions complacent over routine
but vital procedural checks.
In the end it is always the human element, with all its subjectivity, that counts in decision-making. "