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Q 1/18
Score 0
There are 60 balls in a box. 12 of them are black. Find the percentage of black balls in the box. [Type the answer]
120
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Q 2/18
Score 0
A group of 50 firemen takes a physical fitness test. 10 of them fail the test. Find the percentage of firemen in the group who pass the test. [Type the answer]
120
Users enter free text
18 questions
Q.
There are 60 balls in a box. 12 of them are black. Find the percentage of black balls in the box. [Type the answer]
1
120 sec
Q.
A group of 50 firemen takes a physical fitness test. 10 of them fail the test. Find the percentage of firemen in the group who pass the test. [Type the answer]
2
120 sec
Q.
A fruit shop sold 100 apples yesterday. The number of apples sold today is 55% of that of yesterday. Find the number of apples sold today. [Just type the number]
3
120 sec
Q.
Ann spends 120 minutes on writing an article, which is 30% of the total time she spends on doing homework. Find, in minutes, the total time she spends on doing homework. [Just type the number]
4
300 sec
Q.
In a test, Amy’s score is 60. If Ben’s score is 40% lower than Amy’s, find Ben’s score. [Just type the number]
5
120 sec
Q.
The weight of an apple is 300g, which is 20% heavier than an orange. Find the weight of the orange. [Type the answer]
6
300 sec
Q.
Tim is 120cm tall last year and he is 150cm tall this year. Find the percentage change of his height. [Type the answer]
7
300 sec
Q.
The number of visitors to a museum last week was 300. The number of visitors decreases by 60% this week. Find the decrease of number of visitors this week. [Just type the number]
8
120 sec
Q.
The amount of rainfall of yesterday was 30 and the amount of rainfall of today is 24 mm. Find the percentage change of rainfall. [Type the answer]
9
120 sec
Q.
The income of Mr Ma was $1000. His income increases by 30% this month. Find his income this month. [Type the answer]
10
120 sec
Q.
Alex bought a watch for $600 and sold it at a profit of $450. Find the profit per cent. [Type the answer]
11
120 sec
Q.
The cost price of a bicycle is $700. It is now sold at a loss of 30%. Find the loss. [Type the answer]
12
120 sec
Q.
The cost price of a bicycle is $700. It is now sold at a loss of 30%. Find the selling price. [Type the answer]
13
120 sec
Q.
The marked price of a calculator is $160. If it is sold at a discount of 15%, find the discount. [Type the answer]
14
120 sec
Q.
The marked price of a TV set is $5 000, and it is sold at a discount of 30%. What is the selling price? [Type the answer]
15
120 sec
Q.
The selling price of a camera is $600, and it is sold at a profit of 20%. Find the cost. [Type the answer]
16
300 sec
Q.
The selling price of a briefcase is $560, and it is sold at a discount of 20%. Find the marked price. [Type the answer]
17
300 sec
Q.
Are you confident in doing tomorrow's chapter test?
