2010006206
Level:
B
Find the number by \( 2.5{\small{{}^\text{o}\mkern-5mu/\mkern-3mu_\text{oo}}} \) greater than \( 800 \).
\(802\)
\(820\)
\(800.2\)
\(800.025\)
Percent problems and financial mathematics
2010006205
Level:
B
The price of oil rose by \(60\%\). By how many percent it is necessary to reduce the price of oil so that it costs the same as before?
by \( 37.5\% \)
by \( 60\% \)
by \( 40\% \)
by \( 160\% \)
2010006204
Level:
B
The number of permanent residents of a city has decreased by \( 10\% \) per year in the last three years. How many residents did the city have three years ago, if we know that the last year the population was \(972\)?
\( 1\,200 \)
\( 1\,080 \)
\( 900 \)
\( 1\,070 \)
2010006203
Level:
B
Two sides of a rectangle were increased by \( 10\% \). What is the percentage change of the area of the rectangle?
it increased by \( 21\% \)
it increased by \( 20\% \)
it decreased by \( 40\% \)
it decreased by \( 20\% \)
2010006202
Level:
B
By how many percent should we shorten the edge of a cube so that its surface area is decreased by \( 19\% \)?
by \( 10\% \)
by \( 19\% \)
by \( 9\% \)
by \( 90\% \)
2010006201
Level:
B
If \( 40\% \) of the number \( 60 \) is by \( 18 \) smaller than \( 60\% \) of the number \( x \), then:
\( x=70 \)
\( x=20 \)
\( x=126 \)
\( x=193 \)
2010001902
Level:
A
Sport shoes cost \( 112 \) EUR after a \( 40\% \) price increase. How much did the same shoes cost before the price increase?
\( 80 \) EUR
\( 28 \) EUR
\( 78.4 \) EUR
\( 67.2 \) EUR
2010001901
Level:
A
A \( 5\,\mathrm{kg} \) sugar solution was prepared by dissolving \( 400 \) g of sugar in water. Calculate the percentage concentration of the solution.
\( 8\% \)
\( 12.5\% \)
\( 80\% \)
\( 16\% \)
Visualizing Percentages II
Submitted by ladislav.foltyn on Fri, 04/19/2019 - 16:44Percent -- Numbers
Question:
Convert each of the following decimals, fractions and mixed numbers to a percentage: