ANSWERS - HURDLE 07 : MIXTURES

Ans 1. 45

Ans 2. 75

Ans 3. 40

Ans 4. 85

Ans 5. 60

Ans 6. 100

Ans 7. 9:25

Ans 8. Cannot be determined

Ans 9. 36

Ans 10. 54

Ans 11. 90

Ans 12. 150

Ans 13. 38

Ans 14. 50

Ans 15. 160

Ans 16. 340

Ans 17. 60

Ans 18. 100

Ans 19. 24

Ans 20. 48

Ans21. C, Ans22. D, Ans23. A, Ans24. G, Ans25. B ,

Ans26. C, Ans27. B.

SOLUTIONS TO SOME OF THE QUESTIONS :

ANS 1 and 2. As A:B . 3:5 , Let A be 3X and B be 5 X
now (3x+10) : (5x+5) . 11:16
or 11(5x+5). 16(3x+10)
or 55X + 55 .48X+160
or 7x. 105
X.15 , so A. 45 and B .75


ANS 3. and 4 : As A: B . 8:17 , let A be 8x and B be 17x
now (8x+20) : (17x-10) . 4:5
or 4(17x-10). 5(8x+20)
or 68x-40 . 40x+100
or 28x. 140 so X .5
So A. 40 and B .85


Ans7. The ratio of A: B will remain unchanged as half of the liquid is thrown which will not effect the ratio of A: B, hence it will be
9:25.

Ans8. Cannot be determined as we don't have the Quantity of A in the solution. (UrPercentile.com)

Ans 11 and 12.
3x: 5x . A: B
(3x/2 - 10) : (5x/2- 5) . 1: 2
3X- 20 . 5X -5
X/2 . 15
X. 30. (UrPercentile.com)
Ans 11. Initial Quantity of A is 3X . 30*3 . 90
Ans 12. Initial Quantity of B is 5X . 30*5 . 150
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Ans 17 and 18 . (3x +5) : (5x-10) . 7 :8
24X +40 . 35X -70
11X . 110
X . 10
Ans 17 . 3*10*2. 60
Ans 18 . 5*10*2 . 100


Ans 26 . 20 Kgs.
Read " For APL families, however, the cutback has been more drastic - an increase in issue price of grain and a significant
reduction of foodgrain from 35 kg a household to 20 kg. "

Ans 27 . B. Storage cost increases. Read second last and third last paragraph.