The following table gives the information regarding the number of persons employed to a piece of work and time taken to complete the work:
$\begin{matrix} Number of persons : & 2 & 4 & 6 & 8 Time taken in days : & 12 & 6 & 4 & 3 \end{matrix}$
Plot a graph of this information.

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Solution

We represent number of person along x-axis and time taken in day along y-axis. Now plot the points (2,12), (4,6), (6,4) and (8,3) on the graph and join them in order as shown on the graph.

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Q. The following table gives the information regarding the number of persons employed to a piece of work and time taken to complete the work:

Number of persons:	2	4	6	8
Time taken (in days):	12	6	4	3

Plot a graph of this information.

The following table gives the information regarding the number of persons employed to a piece of work and time taken to complete the work:
$\begin{matrix} Number of persons : & 2 & 4 & 6 & 8 Time taken in days : & 12 & 6 & 4 & 3 \end{matrix}$
Plot a graph of this information.

Q. Number of persons in various age groups in a town is given in the following table.

\begin{matrix} Age & 1 - 14 & 15 - 29 & 30 - 44 & 45 - 59 & 60 - 74 & 75 and group & above (in years) Number & 2 lakhs & 1 lakh 60 & 1 lakh 20 & 1 lakh 20 & 80 & 40 of persons & thousands & thousands & thousands & thousands & thousands & thousands \end{matrix}

Draw a bar graph to represent the above information and answer the following questions :
a) Which two age groups have the same population?
b) All persons in the age group of 60 and above are called senior citizens. How many senior citizens are there in the town?

Q. In a Television game show, the prize money of Rs1,00,000 is to be divided equally amongst the winners. Complete the following table and find whether the prize money given to an individual winner is directly or inversely proportional to the number of winners:

\begin{matrix} N o . o f w i n n e r s & 1 & 2 & 4 & 5 & 8 & 10 & 20 P r i z e f o r e a c h w i n n e r (i n R s .) & 1, 00, 000 & 50, 000 & \dots & \dots & \dots & \dots & \dots \end{matrix}

Q. Two dice, one blue and one grey, are thrown at the same time. Complete the following table:

Event: 'Sum on two dice'	2	3	4	5	6	7	8	9	10	11	12
Probability

From the above table a student argues that there are 11 possible outcomes 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 and 12. Therefore, each of them has a probability

\frac{1}{11} .

Do you agree with this argument?

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The following table gives the information regarding the number of persons employed to a piece of work and time taken to complete the work: Number of persons:2468Time taken in days:12643 Plot a graph of this information.

We represent number of person along x-axis and time taken in day along y-axis. Now plot the points (2,12), (4,6), (6,4) and (8,3) on the graph and join them in order as shown on the graph.

The following table gives the information regarding the number of persons employed to a piece of work and time taken to complete the work:
$\begin{matrix} Number of persons : & 2 & 4 & 6 & 8 Time taken in days : & 12 & 6 & 4 & 3 \end{matrix}$
Plot a graph of this information.