Mathematics quiz on Percentage (20-12-2020)

A college decided to increase its employee’s salary by 30%, but due to corona virus pandemic disease, the colleges later decide to decrease 20% in salary of its employees. What is the net change in salary?

Chinu spends 20% of his dad's income on tuition fee, 30% on room rent, and half of the remaining on food. He spends Rs. ___________ on medicine. He saves Rs. 1750, which is 35% of the remaining amount after spending on the tuition fees, room rent and food.

Hanshika decreases the use of mustard oil by 20% if the price of mustard oil is increase by 25% to maintain the budget. The increase in amount for the mustard oil is:

The management of a company was taken up by a multinational company and salary of each employee was increased by 20% and 4% of the salary was deposited in employee insurance scheme. After some time, the management of the company was again handed back to the old company. This company now reduced the salary of each worker by 20% and continued the deposit of 4% in employee’s insurance scheme. What is the percentage change in the original and new paid up amount to each employee?

Find the percentage of total adult in a village, who is in service, if two-third of a village consist of men and the remaining are women. Out of these 70% of the men and 60% of the women are educated. 30% of educated men and 20% of educated women are graduates. 20% of graduate men and 15% of graduate women are in service.

Calculate the percentage of milk in milkshake, if pooja made a milkshake of 40 litres, which contain 40% water and 10 litres more water added to the milkshake?

The price of petrol increased by 10% last month. Due to increase in price the sale has decreased by 12%. By what percentage the revenue decreased?

A class constituted of 35% of girls. 10% of girls choose sports in their activity 80% girls choose art and craft while the rest of the 7 girls choose home science as their activity how many boys are there in a class.

In an examination, a student got 35% marks and failed by 18 marks. In the same examination, another student got 55% marks and fetched 54 marks more than the minimum marks required to pass. What percent of total marks is pass marks?

Ashish has to obtain 40% marks to pass. He obtains 100 and fails by 50. Find the maximum number of marks.