Percentage applications and word problems.
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Q1 · Percentage · EASY
In a class of 60 students, 40% are girls. How many boys are there in the class?
Q2 · Percentage · MEDIUM
A shopkeeper marks his goods 25% above the cost price and then gives a discount of 10%. What is his profit percentage?
Q3 · Percentage · MEDIUM
The population of a town increases by 10% in the first year and decreases by 10% in the second year. What is the net change in population after two years?
Q4 · Percentage · HARD
In an election between two candidates, one candidate got 62% of the total valid votes. If 15% of the votes were declared invalid and the total number of votes is 9000, find the number of valid votes polled in favour of the other candidate.
Q5 · Percentage · MEDIUM
If 35% of a number is 420, then what is the number?