Test:
Percentages II - Challenging
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Question 1:
The girl ate three apples out of four. What is percentage of eaten apples?
A
$75\%$
B
$30\%$
C
$40\%$
D
$70\%$
Question 2:
The length of the rectangular plot is
$200meters$
and the width is
$20\%$
of the length. 25% of this plot was ploughed. How many hectares was not ploughed?
A
$0.6ha$
B
$0.06ha$
C
$6ha$
D
$60ha$
Question 3:
Find sum of
$15\%$
of
$15$
and
$34\%$
of
$16$
A
$7.69$
B
$769$
C
$76.9$
D
$9.67$
Question 4:
Find
$12\%$
of a sum of
$1.6+5.1$
A
$8.4$
B
$0.84$
C
$840$
D
$84$
Question 5:
The side of one square is
$6cm$
and is
$15\%$
of the side of another square. Find the perimeter of the larger square.
A
$60cm$
B
$160cm$
C
$100cm$
D
$16cm$
Question 6:
As a result of the machine's improvement, the cutting speed increased from
$24m/\mathrm{min}$
to
$27m/\mathrm{min}$
. How much did productivity increase?
A
$1.25\%$
B
$125\%$
C
$12.5\%$
D
$25\%$
Question 7:
One of the adjacent angles is
$25\%$
of the other. Find these angles
A
${155}^{0},{25}^{0}$
B
${100}^{0},{80}^{0}$
C
${140}^{0},{30}^{0}$
D
${144}^{0},{36}^{0}$
Question 8:
A cubic shaped tank with a
$1m$
edge is filled with water by 67%. Find a volume of water in the tank.
A
$1{m}^{3}$
B
$67{m}^{3}$
C
$0.67{m}^{3}$
D
$6.7{m}^{3}$
Question 9:
From milk it is possible to get
$6.3\%$
of Parmigiano cheese. How much milk do you need to get
$8kg$
of cheese?
A
$12.6kg$
B
$100kg$
C
$126kg$
D
$126\frac{62}{63}kg$
Question 10:
Find
$27\%$
of
$6\frac{1}{4}\times 8+3\frac{2}{3}:\left(-5.5\right)$
A
$13.23$
B
$-13.23$
C
$1323$
D
$132.3$
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