A man sells a book at a profit of 20%.if he had bought it at 20% less and sold it for rs 18 less,he would have gained 25%.what is the cost price of the book

In September the total enrollment of a school was 1,200 students. Of these students, 20% of them were boys. n October, some more boys enrolled in the school and the percent of students that were boys...

In a certain year total population of a village was 2000. If the number of men is increased by 10% and that of the woman is decreased...

If one pair of opposite sides of a square are increased in length by 20% and the other pair of sides are increased in length by 50%, by what percent is the area of the rectangle that results greater...

If I score a 64 and a 79 on two tests and I have two more tests to take and I have to get an 80% overall in the class what’s the lowest score I need on the final two tests

If i have five numbers that increase in value 100 to 130 = 30%, 130 to 160 = 23%, 160 to 210 = 31% and 210 to 215 = 2%....the total of those percentages added up is 87%. Why then is the percentage...

So im looking to build my own beard oil and as a general im starting with a 30ml bottle I have 2 types of oil carrier and essential oils. Essential oils im allowed to use 8% by 30ml volume so...

we have prices for some different products and discounts now price has increased for 2 Rs on each products. how calculate the percentage of increased price for discount percentage.

Hans has two solutions that contain alcohol and mixing them with each other. Solution A has 40% alcohol and solution B has 10% alcohol. He uses 1600 mililiters of Solution A. How many milliliters...