Consider the bar graph given below.
How many people have their birthday in January - September?

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Solution

The correct option is D 37
First, note that each small division on the Y- axis stands for 2 people.
Also, there are three bars before the month of October,
Jan - March: Height = $6 \times 2$ = 12 units
April - June: Height = $3.5 \times 2$ = 7 units
July - Sep: Height = $9 \times 2$ = 18 units

These values represent the number of people who have their birthday in the months of January to September.
$∴$ the total number of people who have their birthday before October
$= 12 + 7 + 18 = 37$

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Similar questions

Class 8 students did a survey on birthdays. This chart shows the number of people whose birthdays fall on different months of the year.

A) How many people have their birthdays before July?

B) How many people have their birthdays in December if nobody has their birthdays in October and six people have their birthdays in November.

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