NIACL Model Paper 10 with solutions for free online practice

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Directions (61-65): Study the following table carefully and answer the given questions.
Data related to rating of 5 government schemes in two villages (X and Y)

Scheme		Village X		Village Y
	Number of raters	Average rating	Number of raters	Average rating
A	_	52	_	78
B	125	__	150	_
C	90	64	96	_
D	_	72	_	96
E	100	66	80	66.25

Note:
(i) Few data are missing (indicated by —). You need to calculate their values based on given data, if required, to answer the given question.
(ii) Sum total of ratings = Number of raters x Average rating

Question : 62 of 100

Marks: +1, -0

For scheme D, the sum total of ratings from village X and that from village Y are equal. The respective ratio of number of raters in village Y and village Z is 5 : 8. The number of raters in village Z is what percent more than the number of raters in village X ?

20%
$16 2/3%$
15%
$22 1/2%/$
25%

Validate

Solution:

(1) Scheme D:
72x = 96y
where x and y are numbers of raters for village X & Y.
⇒

x/y =96/72=4/3;x:y=4:3

x : y : z

20 : 15 : 24
=> x:z= 20:24 = 5:6
.'. Required % =

1/5× 100 = 20%

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