There was no NOTA (None of the above) option. Two candidates X and Y contested an election. Which one of the following is correct? (UPSC 2022)ġ3. When 60% of the number x is added to another number z, then the sum becomes 165% of the value of z. When 70% of a number x is added to another number y, the sum becomes. Cannot be determined due to insufficient dataġ2. If the price of an article is decreased by 20% and then the new price is increased by 25%, then what is the net change in the price?ĭ. Find the population of females in the town.ġ1. If the number of males increases by 10% and the number of females increases by 20%, then the population becomes 6800. Find the population at the start of the third year.ġ0.

20% of a number when subtracted from 108, gives the number itself. By how much percent is C’s salary more than A’s salary?Ĩ. A’s salary is 20% lower than B’s salary, which is 15% lower than C’s salary. Which of the following is the largest number?ħ. What is the percentage change in the area of the rectangle?Ħ. The length and the breadth of a rectangle are changed by +20% and by –10%, respectively. The percentage of the original cost price he will recover is:Ĥ. A trader gives successive discounts of 10%, 20% and 10% respectively. If 30% of the Indian students are girls, then what percentage of foreign students are boys? (UPSC 2021)ģ. In a class, 60% of students are from India and 50% of the students are girls.

Student A scores 20 marks in an examination out of 30 while another student B scores 40 marks out of 70. If original value is changed to the new value, then % change is given as -ġ.The process for getting this is perfectly illustrated through the unitary method: For example, a student scores 20 marks out of a maximum possible 30 marks.The concept of percentage mainly applies to ratios, and the percentage value of a ratio is arrived at by multiplying by 100 the decimal value of the ratio.The basic utility of Percentage arises from the fact that it is one of the most powerful tools for comparison of numerical data and information.

Percent means ‘for every 100’ and is derived from the French word ‘cent’, which is a French word for 100.

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