Question

The city of Austin has a bridge that is famous for housing the largest urban bat colony in the world. It is home to 1.5 million bats. It has been determined that the bats eat a total of 15 tons of insects a night. If the population of the bats increases to 2 million, about how many insects would they consume?

Answer 1

Answer:

The 2 million bats will consume 20 tons of insects in the city of Austin

Solution:

The population of the bats increases to 2 million in the city of Austin

We have to find about how many insects would they consume?

Now, according to given information  

1.5 million bats ⇒ 15 tons of insects  

Now, 2 million bats ⇒ x tons of insects

Then by chris cross method  

$1.5 \times x = 15 \times 2$

$x \times \frac{15}{10}=15 \times 2$

$\begin{array}{l}{x \times 15=15 \times 2 \times 10} \\\\ {x=2 \times 10=20}\end{array}$

Hence, the 2 million bats will consume 20 tons of insects.