Bissoy.com
Doctors Medicines MCQs Q&A

Sumit attempted 75% of questions correctly in a math test having 60 questions. How many questions did he answer incorrectly if he has attempted all questions in the test?

Sumit attempted 75% of questions correctly in a math test having 60 questions. How many questions did he answer incorrectly if he has attempted all questions in the test? Correct Answer 15

Given:

Sumit scored in math test = 75%

Total number of questions in math test = 60

Concept:

X% of a number = Actual number × (X/100)

Calculation:

Let the number of correct questions attempted by him be x, then

x = 60 × (75/100)

⇒ x = 45

∴ Number of incorrect questions attempted by him = 60 – 45 = 15

Related Questions

Sumit stays in Noida in a joint family comprising of his parents, uncle, aunt, an elder sister and a cousin two years younger than him. Sumit completed his MBA in 2013, from a reputed B-School. That year, the average age of Sumit's family was 41. Sumit got married in 2015 and two years after he became father. If the average age of Sumit's family in 2019 remains same as in 2013, and Sumit is older than his wife by 3 years, at what age did Sumit graduate MBA?
To pass a test, a candidate needs to answer at least 2 out of 3 questions correctly. A total of 6,30,000 candidates appeared for the test. Question A was correctly answered by 3,30,000 candidates. Question B was answered correctly by 2,50,000 candidates. Question C was answered correctly by 2,60,000 candidates. Both questions A and B were answered correctly by 1,00,000 candidates. Both questions B and C were answered correctly by 90,000 candidates. Both questions A and C were answered correctly by 80,000 candidates. If the number of students answering all questions correctly is the same as the number answering none, how many candidates failed to clear the test?
A competitive examination question paper comprised of 80 questions, out of which 20% were of Aptitude, 30% from Mathematics and the remaining from the elective subject. A student attempted all of the aptitude questions, but only 50% of the attempted questions were correct. He attempted 50% of the Mathematics questions, out of which 75% were correct. From the elective subject, he attempted 90% of the questions, out of which 75% were correct. What percentage of the total questions did he have correct?
Ten bools are arranged in a row following a certain sequence.Among them 3 History,3 are Economics, 2 are Math's and are English.From the left,There is English book between a History and Math's book, a History book between a Math's and an English book, an Economics book between an English and a Math's Book Math's book between two Economics books and two Economics book between Math's and a History book.Book of which subject is at the sixth position from the left?
In an examination, a student can choose the order in which two questions (QuesA and QuesB) must be attempted. - If the first question is answered wrong, the student gets zero marks. - If the first question is answered correctly and the second question is not answered correctly, the student gets the marks only for the first question. - If both the questions are answered correctly, the student gets the sum of the marks of the two questions. The following table shows the probability of correctly answering a question and the marks of the question respectively.  question Probability of answering correctly marks QuesA 0.8 10 QuesB 0.5 20 Assuming that the student always wants to maximize her expected marks in the examination, in which order should she attempt the questions and what is the expected marks for that order (assume that the questions are independent)? 
Sumit scored 75% on a math test with 60 questions. How many questions did he answer incorrectly? A. 10 B. 15 C. 17 D. 20
Two friends Peter and Sumit are playing catch a those(Pakdam pakdai). Peter is 450 m behind Sumit. Peter runs 45m and Sumit runs 30 m in a minute. In what time will Peter chase the Sumit 
In an exam of 80 questions, a correct answer gives 1 marks but a wrong answer deducts 1 marks, and if a question in not attempted there is no deduction in marks. If a student attempted only 80% of the question and got 32 marks, then how many questions did he answer correctly?
In the given question, a part of the sentence is printed in bold. Below the sentence, three alternatives to the bold part are given which may help improve the sentence. Choose the option that reflects the correct use of the phrase in the context of the sentence. In case the given sentence is correct, your answer is (E) i.e. No correction required. Monu and Sonu attempted to make light their difficulties, but it was obvious that things were going badly for them. i attempted to make their difficulties light ii has attempted to make light their difficulties iii attempted to make light of their difficulties
Seven people A, B, C, D, E, F and G live on separate floors of a 7-floor building. Ground floor is numbered 1, first floor is numbered. 2 and so on until the topmost floor is numbered 7. Each one of these having a different cars-Cadillac, Ambassador, Fiat, Maruti, Mercedes, Bedford and Fargo but not necessarily in the same order. Only three people live above the floor on which A lives. Only one person lives between A and the one having a car Cadillac. F lives immediately below the one having a car Bedford. The one having a car Bedford lives on an even-numbered floor. Only three people live between the ones having a car Cadillac and Maruti. E lives immediately above C. E is not having a car Maruti. Only two people live between B and the one having a car Fargo. The one having a car Fargo lives below the floor on which B lives. The one having a car Fiat does not live immediately above D or immediately below B. D does not live immediately above or immediately below A. G does not have a car Ambassador. Question : How many people live between the floors on which D and the one having a car Bedford ?