Question

According to above histogram, how many workers earn less than $Rs.850$?

• A. $30$
• B. $20$
• C. $10$
• D. $40$

Answer 1

Answer: (B)

$20$

From the given histogram,

$800-810$ rupees was given to $3$ workers,

$810-820$ rupees was given to $2$ workers,

$820-830$ rupees was given to $1$ workers.

$830-840$ rupees was given to $9$ workers,

$840-850$ rupees was given to $5$ workers,

$850-860$ rupees was given to $1$ workers,

$860-870$ rupees was given to $3$ workers.

$870-880$ rupees was given to $1$ workers,

$880-890$ rupees was given to $1$ workers,

$890-900$ rupees was given to $4$ workers.

Then, the number of workers who earn less than rupees $850$

$=n\left(800\right)+n\left(810\right)+n\left(820\right)+n\left(830\right)+n\left(840\right)$

$=3+2+1+9+5=20$.

Hence, option $B$ is correct.