Percentages + expression of a variable from the formula - practice problems
Number of problems found: 216
- The enrolment 2
The enrolment at a school has increased from 1400 learners to 1600 learners over 5 years. What is the percentage increase in enrolment? - Petra 6
Petra sold an item for 4000 and made a 40% profit. What was the cost price of the product? - The sum 41
The sum of 640.00 was deposited in the first bank for five years, and the interest given was 160.00. Find the rate. - Full value
If 7 %=16000000, what will be 100%?
- The balance 2
If your balance at the end of 4 years is 50000, at a 5% interest rate, What was your original investment? - Markdown
February is sale month at the clothing store. All items are marked down 20 percent. If the sale price for a purse is $42, what was the price before the markdown? - General right triangle
In a right triangle, if a =x+34 and b = x and c= 50, then solve for x. Side c is a hypotenuse. Then discuss the case when a or b is a hypotenuse. - After 9
After reducing the price by 10%, the dress costs 270 GEL. What was the cost of the dress before it got cheaper? - Peter 17
Peter ate 9 ounces of chocolate cake which was 75% of the entire cake. Which expression can be used to find the size of the full cake?
- Titanic
Titanic and Star Wars have made the most money at the box office. Star Wars made about 76.7% of the money that Titanic made at the box office. If Star Wars made about $461 million, how much did Titanic make? Round to the nearest million dollars. - Calculate 83261
Calculate the area of the triangle ABC, in which you know the side c=5 cm, the angle at the top A= 70 degrees, and the ratio of the segments cut by the height to the side c is 1:3 - Isosceles 83247
Calculate the lengths of the sides in an isosceles triangle, given the height (to the base) Vc= 8.8cm and the angle at the base alpha= 38°40`. - Subtended 83194
A circle k with a center at point S and a radius of 6 cm is given. Calculate the size of the central angle subtended by a chord 10 cm long. - Original 83173
When drying, the modeling mass loses 36% of its original volume. If the cube's volume is 5.12 dm³ after drying, what was the original length of the edge?
- Circumscribed 83152
Given is an isosceles triangle whose base is 8 cm, and the sides are 15 cm long. Calculate the area of the triangle and the radius of the inscribed and circumscribed circle. - Perpendicular 82473
In the right triangle KLM, the hypotenuse l = 9 cm and the perpendicular k = 6 cm. Calculate the size of the height vl and the line tk. - Right-angled 82416
What are the sides of a right-angled triangle with a perimeter of 45 centimeters and a volume of 67.5 cm²? - Discount 82044
The purchase of a sweater after a 28% discount was CZK 360. How much was the shirt before the discount? - Written 81992
8% of the price of the machine is written off every year. In how many years will the price drop from 250,000 to 150,000?
Do you have homework that you need help solving? Ask a question, and we will try to solve it.