There were 200 fishes in an aquarium, 99% of which were red. How many red fishes must be removed to make the percentage of red fishes 98%?
Red fishes to be removed is x
Total fish = 200 Red fish out of total fish = 99%(200) = 198
To make the red fish percentage to 98%: total red fish after removing = 98%(total fish after removing) 198-x=98%(200-x) x = 100
100 fishes should be removed.
There are 100 employees in a room in which 99% are managers. How many managers must leave the room, to Bring down the percentage of managers to 98%?
If the price of a dress is cut by 25 to make a sell then what percentage of the sale price must be increased to sell the dress at original price?
At a school outing 81% of the boys had lost a shoe, 82% of the boys had lost a sock, 77% of the boys had lost a handkerchief and 68% o the boys had lost a hat. What percentage at least must have lost all 4 items?
