Number of problems found: 726
- The grocery store
The grocery store earned € 15450 in the first week. In the second € 18630. What percentage did sales increase in the second week compared to the first week?
- Price increase 2x
If two consecutive times we increase the price of the product by 20%, how many % is higher final price than the original?
We test medicine on 6 patients. For all drug doesn't work. If the drug success rate of 20%, what is the probability that medicine does not work?
Two masons with the same performance would have made of plaster for 6 days. One of them, however, has increased its daily performance by 50%. How long would take they now to make plaster together?
- Frameworks is bad
Calculate how many percent will increase an HTML document's length if any ASCII character unnecessarily encoded as a hexadecimal HTML entity composed of six characters (ampersand, grid #, x, two hex digits, and the semicolon). Ie. space as:
- Mr. Brown
Mr. Brown invested 15,000 euros in the bank for an annual term deposit. After the first year, he gained 600 euros. What was the annual interest rate of his deposit?
- The test
The test contains four questions, and there are five different answers to each of them, of which only one is correct, the others are incorrect. What is the probability that a student who does not know the answer to any question will guess the right answer
- Discount and prices
After a 29% discount, the new product price was € 426. What was the original price of the product?
- Cutting circles
From the square 1 m side we have to cut the circles with a radius of 10 cm. How many discs we cut and how many percent will be waste?
- Average mark
Calculate average mark in English, if a student got a couple of 3's, 20% less 2 than 3, and 50% more 1's than the 2's.
Enterprise sold 7/12 of their products to foreign markets and 2/5 of the remainder sold at home. How many % of the products is still in stock?
- Percentage of waste
In a square plate with side 75 cm we cut 4 same circles. Calculate the percentage of waste.
The value of annual production enterprise is 7.1 million USD. The average annual growth rate is 1.5%. What will be value of production at the end of the fifth year?
They fill the shape hole with dimensions 2.9 m, 17 m, 15.2 m with 97 m3 of soil. How many percent does it fill up?
- Growth of wood
The annual growth of wood in the forest is estimated at 2%. In how many years will make the forest volume double?
How much m² of fabric do we need to sew a 50cm-shaped cube-shaped seat if 10% of the material we add to the folds?
Ramon earn's 1,810 each month and pays 53.20 bill on electricity. To the nearest tenth of a percent, what percent of Ramon's earnings are spent on electricity each month?
- Water percent
A 15 g sample of the substance contains 70% water. After drying, the substance reduced the weight to 9 g. What percentage of water is now in the sample?
- All use computer
It is reported that 72% of working women use computers at work. Choose 3 women at random, find the probability that all 3 women use a computer in their jobs.
- Road drop
On a straight stretch of road is marked 12 percent drop. What angle makes the direction of the road with the horizontal plane?
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