6.
180 kg of mixture of milk and water contains 5% water. How much more water should be added to it so that water may be 10% in the mixture?
- A.20 kg
- C.15 kg
- B.12 kg
- D.10 kg
- Answer & Explanation
- Report
Answer : [D]
Explanation :
Explanation :
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| Let x kg water be added. Then, | |||||||
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| 90 + 10x = 180 | |||||||
| 9x = 90 | |||||||
| x = 10 | |||||||
| Hence 10 kg of water should be added | |||||||
7.
Three types which cost Rs. 81 per kg. Rs. 84 per kg and Rs. 75. 60 per kg are blended together to make 18 kg new blend, in which there are 5 kg, 6 kg and 7 kg of the respective types of quantity. What will be the price per kg of the new quantity?
- A.Rs. 78.90
- C.Rs. 80.90
- B.Rs. 78.10
- D.Rs. 79.90
- Answer & Explanation
- Report
Answer : [D]
Explanation :
Explanation :
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8.
800 litres of mixture contains milk and water in the ratio 5 : 3. How much more water is to be added to get a new mixture containing milk and water in the ratio 5 : 4?
- A.175 litres
- C.150 litres
- B.200 litres
- D.100 litres
- Answer & Explanation
- Report
Answer : [D]
Explanation :
Explanation :
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| 2000 = 1500 + 5x | |||||||||
| 5x = 500 | |||||||||
| x = 100 litres | |||||||||
9.
There are 65 peoples in a village, 39 rupees are distributed among them so that each men gets 80 paise and women gets 30 paise. Find the number of men and women in that village?
- A.45,42
- C.36,33
- B.43,40
- D.39,26
- Answer & Explanation
- Report
Answer : [D]
Explanation :
Explanation :
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| and, number of women = 65 – 39 = 26 | |||||||||||||||
10.
In an examination out of 80 students 85% of the girls and 70% of the boys passed. How many boys appeared in the examination if total pass percentage was 75%?
- A.360
- C.340
- B.320
- D.370
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
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