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- Question
- Rajesh solved 80 percent of the questions in an examination correctly, out of 41 questions solved by Rajesh 37 questions are correct and of the remaining questions out of 8 questions, 5 questions have been solved by Rajesh correctly then find the total number of question asked in the examination?
Options- A. 75
- B. 65
- C. 60
- D. Can't be determined
- Correct Answer
- 65
ExplanationSuppose there are 8y questions were asked apart from the 41 question.Then
37 + 5y/41 + 8y = 80% = 4/5
? 185 + 25y = 164 + 32y
? 7y = 21
? y = 3
? Total no. of questions = 41 + 8 x 3 = 65. - 1. Ashok gave 40 per cent of the amount he had to Jayant. Jayant in turn gave one-fourth of what he receive from Ashok to Prakash. After paying Rs. 200 to the taxi driver out of the amount he got from Jayant,Prakash now has Rs. 600 left with him.How much amount did Ashok have?
Options- A. 1200
- B. 4000
- C. 8000
- D. Data inadequate Discuss
- 2. Pradeep spends 40 percent of his monthly income on food items and 50 percent of the remaining, on cloths and conveyance. He saves one-third of the remaining amount after spending on food, clothes and conveyance. If he saves Rs.19,200 every year, what is his monthly income?
Options- A. Rs. 24000
- B. Rs. 12000
- C. Rs. 16000
- D. Rs. 20000 Discuss
- 3. A candidate attempted 12 questions and secured full marks in all of them. If he obtained 60% in the test and each questions carried equal marks, then what was the total number of questions in the test?
Options- A. 36
- B. 30
- C. 25
- D. 20 Discuss
- 4. A marketing manager is able to manage an average of Rs240 per week during 40h week . But in the final week of the month, his rates are increased by 50%. Then find out the commission the marketing manager makes in that week, if he puts in 60h during that final week?
Options- A. 500
- B. 540
- C. 520
- D. 600 Discuss
- 5. Wheat is now being sold at ? 27 per kg. During last month, its cost was ? 24 per kg. Find by how much per cent a family reduced its consumption, so as to keep the expenditure fixed.
Options- A. 10.2%
- B. 12.1%
- C. 12.3%
- D. 11.1% Discuss
- 6. In a class of 60 children 30% children can speak only English, 20% Hindi and English both and the rest of the children can speak only Hindi. How many children can speak Hindi?
Options- A. 42
- B. 36
- C. 30
- D. 48 Discuss
- 7. The ratio of males and females in a city is 7:8 and the percentage of children among males and females is 25% and 20% respectively.If the number of adult females in the city is 156800, what is the total population?
Options- A. 245000
- B. 367500
- C. 196000
- D. 171500 Discuss
- 8. The ratio of the number of student appearing for examination in the year 1998 in the states A, B and C was 3 : 5 : 6. Next year if the number of students in these states increase by 20%, 10% and 20% respectively, the ratio in states A and C would be 1 : 2. What was the number of students who appeared for the examination in the state A in 1999?
Options- A. 7200
- B. 6000
- C. 7500
- D. Data inadequate Discuss
- 9. After spending 40% in machinery, 25% in building,15% in raw material and 5% on furniture. hari lal has a balance of Rs. 1305. The money with him was?
Options- A. Rs. 6500
- B. Rs. 7225
- C. Rs. 8700
- D. Rs. 1390 Discuss
- 10. In mathematics exam. a student scored 30% marks in the first paper out of a total of 180. How much should he score in second paper out of a total of 150, If he is to get an overall average of at least 50%?
Options- A. 74%
- B. 76%
- C. 70%
- D. 80% Discuss
Percentage problems
Search Results
Correct Answer: 8000
Explanation:
? J = 40% of A =2A/5
? P = 1/4 x 2A/5 = A/10
? A/10 - 200 = 600
? A/10 = 800
? A = Rs. 8000
Correct Answer: Rs. 16000
Explanation:
From question,
Food items = 40%
Clothes + conveyance = 50% of 60% = 30%
? Remaining amount = (100 - 40 - 30)% = 30%
? 1/3 of 30% = 19200
? 10% = 19200
? 100% = Rs. 192000
So his monthly income = 192000 / 12 = 16000
Correct Answer: 20
Explanation:
Let the number of question be Y.
60% of Y = 12
60Y / 100 =12
Y = 20
Correct Answer: 540
Explanation:
Average rate per hr = 240/40 = Rs6/hr
In last week, his rate per hour increases by 50%,
so in the last week, his hourly rate = Rs.6 x (1+50%)= Rs.9
Total hour spent in final week = 60h
? Total commission = 60h x Rs.9/hr = Rs.540
Correct Answer: 11.1%
Explanation:
Old price of rice = ? 24/kg
New price of rice = ? 27 per/Kg
? increased in price of rice = New price - Old prices = 27 - 24 = ? 3/kg
? increased percentage in price = (3/24) x 100
= 121/2 %
Now, reduction in consumption, so as to keep the expenditure fixed.
According to the formula,
= [a/(100 + a)] x 100 %
=[1.25/(100 +12.5)] x 100%
= 11.1%
Correct Answer: 42
Explanation:
Number of student who speak only English =30% of 60 = 18
Number of student who speak Hindi and English =20% of 60 =12
?Number of student who speak only Hindi = (60 - 30) = 30
?Number of student who speak Hindi = 30 + 12 = 42
Correct Answer: 367500
Explanation:
Number of females = 156800 x 100/80 = 196000
? Number of males = 7/8 x 196000 = 171500
Total population = 196000 + 171500 = 367500
Correct Answer: Data inadequate
Explanation:
Let the number of students appearing for examination in the year 1998 in the states A, B and C be 3N, 5N,and 6N respectively.
According to the question, {(3N x 120)/100} / {(6N x 110)/100} = 1/2
Its true for every N so, The data is inadequate.
Correct Answer: Rs. 8700
Explanation:
Let the Hari Lal was having R rupees in beginning.
? R - [40% of R + 25% of R + 15% of R + 5% of R] = 1305
? R - 85% of R = 1305
? 15% of R = 1305
? R = (1305 x 100)/15 = 8700
Correct Answer: 74%
Explanation:
? 30% of 180 + N% of 150 = 50% of (180 + 150)
? 54 + (N x 150)/100 = 165
? 3N/2 = 111
? N = (111 x 2) / 3 =74
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