1003066905
Level:
B
Find the number by \( 1.6{\small{{}^\text{o}\mkern-5mu/\mkern-3mu_\text{oo}}} \) bigger than \( 500 \).
\( 500.8 \)
\( 508 \)
\( 580 \)
\( 500.016 \)
Percent problems and financial mathematics
1003066904
Level:
B
Find the number by \( 2{\small{{}^\text{o}\mkern-5mu/\mkern-3mu_\text{oo}}}\) bigger than \( 100 \).
\( 100.2 \)
\( 102 \)
\( 120 \)
\( 100.002 \)
1003066903
Level:
B
The number of members of a certain golf club was increasing for the last three years by \( 20\% \) a year. How many members were there in the club three years ago, assuming that the number of them amounted to \( 216 \) a year ago?
\( 150 \) members
\( 200 \) members
\( 120 \) members
\( 250 \) members
1003066902
Level:
B
One side of a rectangle was shortened by \( 10\% \) and the other was lengthened by \( 10\% \). What was the percentage change in the area of the rectangle?
it decreased by \( 1\% \)
it decreased by \( 20\% \)
it increased by \( 1\% \)
it did not change
1003066901
Level:
B
Two sides of a rectangle were shortened by \( 20\% \). What is the percentage change in the area of the rectangle?
it decreased by \( 36\% \)
it decreased by \( 40\% \)
it increased by \( 40\% \)
it decreased by \( 20\% \)
1003055513
Level:
A
\( 280 \) tickets were sold for the show, including \( 126 \) reduced tickets. What percentage of tickets sold were reduced tickets?
\( 45\% \)
\( 33\% \)
\( 22\% \)
\( 63\% \)
1003055512
Level:
A
The price of a certain commodity increased from \( 1200 \) zlotys to \( 1248 \) zlotys. By what percentage the price has risen?
\( 4\% \)
\( 40\% \)
\( 0.4\% \)
\( 0.04\% \)
1003055511
Level:
A
The price of an item without the tax equals \(60\) zlotys. When we add \(22\%\) tax to the price, the item costs
\( 73.20 \) zlotys
\( 49.18 \) zlotys
\( 60.22 \) zlotys
\( 82 \) zlotys
1003055510
Level:
A
A pair of trousers costs \( 126 \) zlotys after a \( 30\% \) discount. How much did the trousers cost before the discount?
\( 180 \) zlotys
\( 163.80 \) zlotys
\( 294 \) zlotys
\( 420 \) zlotys
1003055509
Level:
C
Mr. Nowak deposited \( 2000 \) zlotys into his savings account at an annual interest rate of \( 4.5\% \), compounded annually. At the end of the year, the \( 19\% \) tax of the interest was deducted. What was the amount of the money deducted?
\( 17.10 \) zlotys
\( 19 \) zlotys
\( 38 \) zlotys
\( 85.50 \) zlotys