Percentages practice problems - page 42 of 111
Number of problems found: 2206
- Grams 44441
How many grams of 70% and 45% acid must be mixed to form 300 grams of 60% acid? - Calculate 44351
Calculate how many grams of iodine and ethanol are needed to prepare 200 grams of 6% iodine in ethanol solution. - Beginners - skiing
Out of 150 children in a ski course, 40 were beginners. What percentage is that? - Six-sided parasol
The parasol has the shape of the shell of a regular six-sided pyramid, whose base edge is a=6dm and height v=25cm. How much fabric is needed to make a parasol if we count 10% for joints and waste? - Dimensions 44081
In the form of a pyramid on the house with a square floor plan, the roof has dimensions of 12 x 12 m, with a height of 2 m at the highest point. How much roofing do I need to buy? Count on a 10% reserve. - Pyramidal 44061
A pyramidal candle with a square base has a side edge of s = 12 cm and a base edge of 4 cm. How much wax will we need to make it, and how long is the wick if it is 5% bigger than its height? - Created trio
What is the probability that in the created trio, which consists of 19 boys and 12 girls, they will be: a) the boys themselves b) the girls themselves c) 2 boys and one girl? - Second hand store
The price of goods in the store for used goods is determined by agreement, while the sale price is deducted 15% commission - for the store owner. Mathias's parents decided to sell the TV to make their net profit at least 50 euros. What was the minimum sel - The roof The tower's roof has the shape of a regular quadrangular pyramid, the base edge of which is 11 m long, and the side wall of the animal with the base at an angle of 57°. Calculate how much roofing we need to cover the entire roof if we count on 15% waste.
- Angle of inclination
What percentage of the gradient should be indicated on the mark if the angle of inclination of the road is 6°25'? - Calculation 43211
The roof is shaped like a hemisphere with a diameter of 8 m. Calculate how much m² of roofing is needed to cover the entire top if we count 15% for waste and residues and round the result to tenths of m². Use the constant pi rounded to two decimal places - 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? - Megapizza
Mega pizza will be divided among 100 people. First gets 1%, 2nd 2% of the remainder, 3rd 3% of the remainder, etc. Last 100th 100% of the remainder. Which person got the biggest portion? - Fish population
The number of fish in a lake decreased by 10% during one year. Last year, 500 fish were found in the lake. What is the fish population this year? - Online purchase
A ticket for a school performance costs 95 euros. If the ticket is purchased online, there is a discount of 4%. What is the total price of a ticket purchased online? - In the 14
In the survey, the barangay had a certain number of families, and 60% of them identified as belonging to the marginalized sector's poor if the total families were 150. How many families belong to the poor sector? - Multiplier
What is the decimal multiplier to increase by 6.1%? - Two solutions What strong solution is created by mixing 3 liters of 30% solution and 2 liters of 70% solution?
- Social Security Administration
In January 2012, the Social Security Administration increased benefits to its recipients for the first time since 2009. Before the increase, James received $1200/month. After the increase, he received $1243.20/month. Find the percent increase in Social Se - Class enrollment A grade 6 class went on a field trip only 98% or 49 pupils joined the activity. What was the class enrollment?
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