$\begin{matrix} Weekly wages (in ₹) & 0 - 100 & 100 - 200 & 200 - 300 & 300 - 400 & 400 - 500 Number of workers & 40 & 39 & 34 & 30 & 45 \end{matrix}$
What is the number of people whose wage is less than ₹400?

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139

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143

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Solution

The correct option is D 143
The following table shows the less than cumulative frequency for the given distribution.
$\begin{matrix} L e s s & N o . o f w o r k e r s T h a n 100 & 40 200 & 40 + 39 = 79 300 & 79 + 34 = 113 400 & 113 + 30 = 143 500 & 143 + 45 = 188 \end{matrix}$
$∴$ The number of people whose wage is less than ₹400 is 143.

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$\begin{matrix} W e e k l y w a g e s (i n R s .) & 0 - 100 & 100 - 200 & 200 - 300 & 300 - 400 & 400 - 500 N u m b e r o f w o r k e r s & 40 & 39 & 34 & 30 & 45 \end{matrix}$

What is the number of people whose wage is less than Rs.400?

$\begin{matrix} Weekly wages (in ₹) & 0 - 100 & 100 - 200 & 200 - 300 & 300 - 400 & 400 - 500 Number of workers & 40 & 39 & 34 & 30 & 45 \end{matrix}$

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Weekly wages (in ₹)0−100100−200200−300300−400400−500Number of workers4039343045 What is the number of people whose wage is less than ₹400?

The correct option is D 143The following table shows the less than cumulative frequency for the given distribution. LessNo. of workers Than 1004020040+39=7930079+34=113400113+30=143500143+45=188 ∴ The number of people whose wage is less than ₹400 is 143.

$\begin{matrix} Weekly wages (in ₹) & 0 - 100 & 100 - 200 & 200 - 300 & 300 - 400 & 400 - 500 Number of workers & 40 & 39 & 34 & 30 & 45 \end{matrix}$
What is the number of people whose wage is less than ₹400?