11.
A box filled with paper bundles weighs 36 kilograms. If the weight of the box and paper boundless respectively are in the ratio of 3 : 22, then find the weight of the papers in grams.
• A.
Rs. 30,680
• C.
Rs. 31,500
• B.
Rs. 30,710
• D.
Rs. 31,680
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Explanation :
 The box to paper ratio is 3 : 22. To arrives the weight of the box, we first divide 36000 by 25 to get 1440. Multiplying this by 3 we get 4320 which is the weight of the box. Therefore, weight of the paper is 36000 � 4320 = 31,680 kg
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12.
In a class room, three-fourth of the boys are above 160 cm in height and they are 18 in number. Also out of the total strength, the boys from only two-third and the rest are girls. The total number of girls in the class is
• A.
18
• C.
12
• B.
24
• D.
20
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Explanation :
 Total number of boys in the class = 24 Total number of girls in the class = 12 Total strength of the class = 36
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13.
A sporting goods store ordered an equal number of white and yellow tennis balls. The tennis
ball company delivered 45 extra white balls, making the ratio of white balls to yellow balls
 1 5

 1 6
.  How many white tennis balls did the store originally order for?
• A.
450
• C.
225
• B.
270
• D.
None of these
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Explanation :
 Ratio of white to yellow balls = 6 : 5 Difference in the number of white and yellow balls = 6x � 5x = x = 45 Therefore, number of white balls now available = 45 x 6 Number of white balls ordered = (45 x 6) � 45 = 225
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14.
A bag contains Rs 216 in the form of one rupee, 50 paise and 25 paise coins in the ratio of 2 : 3 : 4. The number of 50 paise coins is
• A.
96
• C.
114
• B.
144
• D.
141
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Explanation :
 Let number of one-rupee coins = 2K Number of 50 paise coins = 3K Number of 25 paise coins = 4K 2K + 0.50 x 3K + 0.25 x 4K = 216 2K + 1.5K + K = 216
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15.
A factory employees skilled workers, unskilled workers and in the proportion 8 : 5 : 1 and the wage of a skilled worker, an unskilled worker and a clerk are in the ratio 5 : 2 : 3. When 20 unskilled workers are employed, the total daily wages of all amount to Rs3180. Find the daily wages paid to each category of employees.
• A.
2100,800,280
• C.
2400,600,180
• B.
2400,480,300
• D.
2200,560,420
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