Basic calculations, percentages, ratios, and averages
If 15% of a number is 45, what is 25% of that number?
The ratio of boys to girls in a class is 3:5. If there are 24 boys, how many students are there in total?
A number increased by 20% gives 72. What is the original number?
If the average of 5 numbers is 42, and one number ...
A shopkeeper offers a 10% discount on the marked p...
What is 35% of 80 plus 45% of 120?...
The sum of three consecutive even numbers is 78. W...
If 3/4 of a number is 15 more than 1/3 of the same...
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