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Lets say the answer is 58%,the nearest ten percent would be 60% i.e round up and if the answer lets say is 51-55 %,round down to 50%,basically it depends on the units digits of the number. 5 or less, round down,6 to 9 round up. Hope this clarifies

vinsin03
What does “to the nearest 10%” mean in que 1?
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Quote:
The average (arithmetic mean) of the numbers of countries with local cases from Y1 to Y5 was, to the nearest 5 countries,
I don't really understand what "to the nearest 5 countries" in Q2 means. Can anyone help me explain that?
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Rounding to the nearest 5 count in the answer

When we round off to the nearest 5, we look at the number's last digit.
If the last digit is 3, 4, 5, 6, or 7, we round off to 5.
If the last digit is 0, 1, 2, 8, or 9, we round off to 0.
Remember that when the last digit is 8, or 9, the tens digit also increases by 1.


Example: rounding to the nearest 5
157 = 155 , 79 = 80 , 2651 = 2650 , 573 = 575 , 38 = 40 , and so on
Anhntq
Quote:
The average (arithmetic mean) of the numbers of countries with local cases from Y1 to Y5 was, to the nearest 5 countries,
I don't really understand what "to the nearest 5 countries" in Q2 means. Can anyone help me explain that?
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RutujaDeshmukh19
Part 1:

­The percent increase in the number of cases of the disease from Y9 to Y12 was, to the nearest 10%, _________.

Solution:
For Y9, the number of cases if 200,000 and for Y12 the number of cases is 600,000. To calculate the percent increase in the number of cases:
Increase = 600,000 - 200,000 = 400,000.
% Increase = ( 400,000 / 200,000 ) * 100 = ( 4 / 2 ) * 100 = 200 %

Part 2:

The average (arithmetic mean) of the numbers of countries with local cases from Y1 to Y5 was, to the nearest 5 countries, _________.

Solution:
Y1 - 51 countries
Y2 - 50 countries
Y3 - 40 countries
Y4 - 40 countries
Y5 - 45 countries
Mean = ( 51 + 50 + 40 + 40 + 45 ) / 5 = 226 / 5 ~ 45.2
Closest option choice nearest to 5 is 45.

Part 1: 200 %
Part 2: 45 countries
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Question 1 is straight forward, number of cases of the disease from Y9 (200) to Y12(600) was, so {(600-200)/200} *100= 200%
In Question 2, data moves between 50 and 40 so average should be in between, there is one value in the given answer choice; 45 and it is our answer
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I want to know how come the country in Y5 is 55(highlighted), i can see it as 45. Can you please revisit RutujaDeshmukh19.

RutujaDeshmukh19
Part 1:

­The percent increase in the number of cases of the disease from Y9 to Y12 was, to the nearest 10%, _________.

Solution:
For Y9, the number of cases if 200,000 and for Y12 the number of cases is 600,000. To calculate the percent increase in the number of cases:
Increase = 600,000 - 200,000 = 400,000.
% Increase = ( 400,000 / 200,000 ) * 100 = ( 4 / 2 ) * 100 = 200 %

Part 2:

The average (arithmetic mean) of the numbers of countries with local cases from Y1 to Y5 was, to the nearest 5 countries, _________.

Solution:
Y1 - 51 countries
Y2 - 50 countries
Y3 - 39 countries
Y4 - 40 countries
Y5 - 55 countries
Mean = ( 51 + 50 + 39 + 40 + 55 ) / 5 = 235 / 5 = 47.
Closest option choice nearest to 5 is 45.

Part 1: 200 %
Part 2: 45 countries
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Y5 is 45 only
Arpitamitra
I want to know how come the country in Y5 is 55(highlighted), i can see it as 45. Can you please revisit RutujaDeshmukh19.

RutujaDeshmukh19
Part 1:

­The percent increase in the number of cases of the disease from Y9 to Y12 was, to the nearest 10%, _________.

Solution:
For Y9, the number of cases if 200,000 and for Y12 the number of cases is 600,000. To calculate the percent increase in the number of cases:
Increase = 600,000 - 200,000 = 400,000.
% Increase = ( 400,000 / 200,000 ) * 100 = ( 4 / 2 ) * 100 = 200 %

Part 2:

The average (arithmetic mean) of the numbers of countries with local cases from Y1 to Y5 was, to the nearest 5 countries, _________.

Solution:
Y1 - 51 countries
Y2 - 50 countries
Y3 - 39 countries
Y4 - 40 countries
Y5 - 55 countries
Mean = ( 51 + 50 + 39 + 40 + 55 ) / 5 = 235 / 5 = 47.
Closest option choice nearest to 5 is 45.

Part 1: 200 %
Part 2: 45 countries
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for que 2 ..a more visual and intuitive solution should be more helpful. the number of countries for y1 and y2 are more than 45 and for y3 and y4 are less than 45 ..and then there is 45(approx.) for Y5
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