Question

Class $6$did a survey of birthday dates. This chart shows the number of students with birthdays in each three months of the year.

From the chart, how many people have birthday before july?

• A. $5$
• B. $15$
• C. $20$
• D. $40$

Answer 1

The correct option is C

$20$

Number of students having a birthday in the month of January, February, and March = $15$

Number of students having a birthday in the month of April, May, and June = $5$

Total number of students having birthday before July = $\text{students born in month of January, February, March, April, May and June}$

= $15+5=20$

Hence, $20$ students born before July and option (C) is correct.