Question

An adult blue whale can eat 4.0 x 10^7 krill in a day. At that rate, how many krill can an adult blue whale eat in 3.65 x 10^2 days?

Answer 1

4.0 x 10^7 = 40000000
3.65 x 10^2 = 365
40000000 x 365 = 14600000000 or 1.46 x 10^10
Hope this helps!!

Answer 2

`1.46* 10^(10)` krill.

Explanation:

We have been given that an adult blue whale can eat
`4.0* 10^7` krill in a day. We are asked to find the number of krill an adult whale can eat
`3.65* 10^2` days.

`\text{Krill eaten in given time}=3.65* 10^2\cdot 4.0* 10^7`

Using exponent property
`a^b\cdot a^c=a^(b+c)`, we will get:

`\text{Krill eaten in given time}=3.65* 4.0* 10^(7+2)`

`\text{Krill eaten in given time}=14.6* 10^(9)`

`\text{Krill eaten in given time}=1.46* 10^(10)`

Therefore, an adult whale can eat
`1.46* 10^(10)` krill in
`3.65* 10^2` days.