Question

12 elephants in an elephant camp consumed 240 kg of jaggery everyday. If 3 more elephants were brought to the camp, how much more jaggery would be needed to feed them?

Answer 1

If the number of elephants in the camp increases, then the quantity of jaggery required will also increase.
$\therefore$ This is a case of direct proportion. If 3 more elephants are brought to the camp, then there will be 12 + 3 = 15 elephants in the camp.
Using the formula for direct proportion,
$\frac{\text{Number of elephants}}{\text{Quantity of jaggery required}}=\text{constant}$
$\Rightarrow \frac{12}{240}=\frac{15}{\text{Quantity of jaggery required}}$
$\therefore \text{Quantity of jaggery required}=\frac{240}{12}\times 15=300\text{kg}$.

$\therefore$ Extra jaggery required = 300 - 240
= 60 kg