11.
A person has some amount with him. 25% of it is stolen in a bus, 10% is lost through a hole in the pocket. 50% of remainder is spent on food. He then purchases a book worth Rs. 26 from the remainder. He walks back home because all his money is over. What was the initial amount?
- A.Rs. 160
- C.Rs. 90
- B.Rs. 1230
- D.Rs. 80
- Answer & Explanation
- Report
Answer : [D]
Explanation :
Explanation :
| Let total money be Rs x | ||||||
| Then, x = 0.25x + 0.1x + 0.5[1 - 0.25 - 0.1]x + 26 | ||||||
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12.
A businessman’s earning increases by 25% in one year but decreases by 4% in the next. After 5 years his total earnings would be Rs. 72,000. What is his present earning?
- A.Rs. 10,000
- C.Rs. 40,000
- B.Rs. 80,000
- D.Rs. 54,000
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| The business man's earning after five years = Rs. 72,000 | |||||||||||||||||||||||||
| Let his earnings be Rs. 100 | |||||||||||||||||||||||||
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13.
An army lost 10% of its men in war, 10% of the remaining due to diseases and 10% of the rest were disabled. This, the strength was reduced to 7,29,000 active men. Find the original strength.
- A.10,00,000
- C.15,00,000
- B.12,00,000
- D.None of these
- Answer & Explanation
- Report
Answer : [A]
Explanation :
Explanation :
| Let A be the original strength | ||||||||||||||||||||||||||||||||
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14.
Ramesh purchased an office bag with a price tag of Rs. 600 in a sale where 25% discount was being offered on the tag price. He was given a further discount of 10% on the amount arrived at after giving usual 25% discount . What was the final amount paid by Ramesh?
- A.Rs. 210
- C.Rs. 405
- B.Rs. 540
- D.Rs. 450
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| 600 - 25% of 600 = 450 |
| 450 - 10% of 450 = 405 |
15.
Of the total number of candidates in an examination 40% fail in first subject, of the rest 10% fail in the second and of those that pass in these two subjects, only 75% pass in the remaining subject. The number of unsuccessful candidates exceeds that of the successful ones by 570. What is the total number of candidates?
- A.2,800
- C.3,000
- B.8,400
- D.1,200
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| Let the total number of students = x | |||||||||||||||
| Number of students failing in the first subject = 40% of x | |||||||||||||||
| Number of students failing in the second subject = 10% of rest = 10%(60%) of x = 6% of x | |||||||||||||||
| Therefore, total number of students failing in both the subjects = (40 + 6)% of x = 46% of x ....(i) | |||||||||||||||
| Therefore, students passing in two subjects = 54% of x | |||||||||||||||
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| Therefore, total number of students failing in all the subjects (equation (i) + (ii)) | |||||||||||||||
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| Number of students failing – Number of students passing = 570 (Given) | |||||||||||||||
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| Hence, the total number of students are 3,000 | |||||||||||||||
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