Percentage & it's applications ( 7 Questions & Solutions )

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Q.1) A number is mistakenly divided by 5 instead of being multiplied by 5. Find the percentage change in the result due to this mistake.


Q.2) In an examination, A got 10% marks less than B. B got 25% marks more than C. C got 20% marks less than D. If A got 360 marks out of 500, the percentage of marks obtained by D was ___ ?


Q.3) If A's salary is 30% more than that of B, then how much percent is B's salary less than that of A's?


Q.4) In a constituency there are 22,000 voters. In a certain election there were 2 candidates. 75% polling was done. The elected candidate secured 52% of the total votes. How many votes did he secure more than the other candidate?


Q.5) 30% mixture of a substance and 56% mixture of another substance, should be mixed in what proportion to get 40% mixture?


Q.6) In an examination, 35% students failed in Hindi, 45% failed in English and 20% in both. What is the percentage of students who passed in both the subjects?


Q.7) In a bus the number of male passengers is 140% of the number of female passengers. If the driver and conductor (both males) are included in the number of males, then the number of males is 150% of the number of females in the bus. How many passengers are there in the bus?


Q.8) In a box of mangoes, 80% are of superior quality and the rest are inferior. If 10 mangoes of the inferior quality are removed, there will be 96% superior quality mangoes. What is the total number of mangoes in the box?

https://youtu.be/cfAR4rdnX4A

Q.9) Out of the total students in a class, 75% passed in English and 80% passed in Maths. 60% students passed in both the subjects. If 20 students did not pass in either of the two subjects, what is the total number of students in the class?

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