Question

By what percentage was the maintenance cost in $1997-1998$ was lower compared to $1999-2000$?

• A. $33.55\%$
• B. $69.07\%$
• C. $54.23\%$
• D. $67.12\%$

Answer 1

The correct option is B $69.07\%$

From the histogram, the maintenance cost in the year:

$1995-1996$ is Rs. $2000$

$1996-1997$ is Rs. $3000$

$1997-1998$ is Rs. $1500$

$1998-1999$ is Rs. $2500$

$1999-2000$ is Rs. $4850$

$2000-2001$ is Rs. $5000$

$2001-2002$ is Rs. $7200$.

The decrease in the cost in $1997-1998$ compared to $1999-2000$ $=$ $4850-1500=3350$.

The cost was lower in $1997-1998$ compared to $1999-2000$ by a percentage

$=$ $\frac{3350}{4850}\times 100\%$ $=69.07\%$.

Hence, option $B$ is correct.