Question

Refer to the graph and answer the given questions.

Data related to number of elephants in two Reserves A and B of country X during 6 years

Number of elephants in reserve A decreased by $25\%$ from 2006 to 2007 and number of elephants in reserve B increased by $15\%$ from 2006 to 2007.
What was the total number of elephants in reserves A and B together in 2007?

• A. 172
• B. 164
• C. 158
• D. 174
• E. 166

Answer 1

The correct option is B

164

Number of elephants in 2007:
$ReverseA\Rightarrow \frac{96\times 75}{100}=72ReverseB\Rightarrow \frac{80\times 115}{100}=92$

$\therefore$ Total number of elephants in 2007 = 72 + 92 = 164