Percentages practice problems - page 50 of 114
Number of problems found: 2276
- Decibel
What percentage of sound intensity increases if the sound intensity level increases by 1 dB? - Helena Jane savings
Helen had 20% more savings than Jane. They have saved 1804 CZK. How much have Helen and Jane held? - Well excavation transport
The company is to dig a well 25 m deep with a radius of 0.8 m. How many cars that can be loaded with 12 cubic m will be needed to transport the excavated soil if it is calculated that the soil will increase in volume by 10% when excavated? - Percentage calculation examples
Calculate these four examples as percentages: 5% of 650 meters 30% of 18 kg 351% if 9% is 1/3 62.5% if 15% is 0.75 - Freezer box calculation
The freezer box has internal dimensions of 900 mm, 0.75 m, and 6 dm. 30% of the space is filled with frozen peppers packed in boxes measuring 150 mm, 100 mm, and 50 mm. How many boxes are in the box? - Loan repayment calculation
At the beginning of the year, Mr. Smith borrowed CZK 30,000 for two years with an interest rate of 11.8%. He will repay the debt at once after two years. The bank pays interest once a year, always at the end of the year. How much does Mr. Smith have to re - The hockey
The hockey player scored six goals from 15 shots. How many % was he successful? - Bank loan repayment
On 1 March, Mr. Závora obtained a loan from the bank for CZK 70,000 for four months. The interest rate is 9.5%. How much will he repay to the bank? - Orchard sapling planting
The orchard was planted over three years. In the second year, 15% more saplings were planted than in the first year. In the third year, 40% fewer saplings were planted than in the first and second years combined. A total of 4,128 saplings were planted. Ho - Petr savings calculation
Peter spent a fifth of his savings on a compact disc and 25% on a nature book. He has CZK 550 left. How many crowns did Peter have in savings? - Ace or king
What is the probability that we will choose an ace or a king when choosing from a deck of sevens cards? - Gutter metal calculation
Gutters have the shape of a half-cylinder. Their diameter is 20 cm, and the total length around the roof is 35 m. How much is sheet metal needed to make them? Add 15% to the connections. - Carnival hat paper
How many square decimeters of decorative paper are needed to make cone-shaped carnival hats for 46 first-graders if the first-graders head perimeter is 49 cm and the cap height is 33 cm? Is it necessary to add 3% paper to the folds? - How many How many m² of copper sheet is needed to replace the roof of a conical tower with a diameter of 13 meters and a height of 24 meters if we count 8% of the material for bending and waste?
- Exponential decay
A tank contains 55 liters of water. Water is flowing out at the rate of 7% per minute. How long does it take to drain the tank? - Invoice arrears interest Mrs. Zdena took over the goods that were ordered, which were worth 5000€. She did not pay the invoice by the required date of 31.5.2019. Interest on arrears is 5.5% per annum. Calculate the payment as of 31.8.2019.
- Cylinder sheet calculation
Calculate the area of sheet metal needed to make a closed cylindrical vessel with a radius of 2.5 m and a height of 1.2 m if the joints and waste count for 6%. - Side effect probability
The probability of an adverse drug reaction is 2.1%. How many people need to be prescribed for one patient to experience side effects with a chance of 90%? - Straight road
The straight road has a rise of 19%. How big is the pitch angle? - Croatian height difference There is a horizontal distance of 9 km between two cities on the Croatian coast. The road connecting these two cities has a climb of 13 per mille. What is the height difference between Croatian cities?
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