Question

Half an avocado has about \[160\] calories. How many calories do a dozen avocados have?

Answer 1

Hint: From the question we have been given that half of an avocado has about \[160\] calories and we are asked to find how many calories does a dozen number of avocados have. So, to solve this question first we will find how many calories a full avocado consists of and next we will use the basic operation of multiplication and find how many does a dozen have. So, we will proceed as follows.

Complete step-by-step answer:
We have been given that half of an avocado has \[160\] calories. So, we will find how many calories a complete single avocado consists of.
So, let us consider that a single avocado as \[a\]. Now, we get,
\[\Rightarrow \dfrac{1}{2}\times a=160\]
\[\Rightarrow a=160\times 2\]
\[\Rightarrow a=320\]
So, a single avocado consists of \[320\] calories.
So, we know that a dozen in numerical form is \[12\].
So, we are asked to find how many calories \[12\] avocados has, so we will use the basic operator which is multiplication and multiply the \[12\] with the calorie of a single avocado.
So, By doing the process. We get,
\[\Rightarrow 12\times 320\]
\[\Rightarrow 3840\]
Therefore, a dozen avocados have \[\Rightarrow 3840\] calories.

Note: Students must be careful in doing calculations. We must understand the question properly to solve it correctly. This is a ratio and proportion problem. So, we can also solve this as follows.
\[1\] dozen avocados = \[12\] avocados. So, we get,
\[\Rightarrow \dfrac{x}{12}=\dfrac{160}{\dfrac{1}{2}}\]
\[\Rightarrow \dfrac{x}{12}=\dfrac{160\times 2}{1}\]
\[\Rightarrow \dfrac{x}{12}=320\]
\[\Rightarrow x=320\times 12\]
\[\Rightarrow x=3840\].
In either way we must have the same answer. We must make any calculation mistakes or our solution will be wrong one.