Question

If one egg has a weight of 50 g, then how many eggs there will be in 1 kg?

Answer 1

Hint: A bigger quantity is divided by smaller to get a number of (how many) items.
For example: If the cost of a pen is 5 rupees and you have 10 rupees, then the total number of pens you can buy is 2 (two pens). It is simply done by calculating division $10 \div 5$ .
Interconversion unit’s examples:
Convert 5 kilograms into grams.
 That is $1kg = 1000g$
                  $\begin{array}{l}
5kg = 5 \times 1000g\\
{\rm{ = 5000g }}
\end{array}$
Convert 250 grams into kilograms.
That is \[1g = \dfrac{1}{{1000}}kg\]
              $\begin{array}{l}
250g = 250 \times \dfrac{1}{{1000}}kg\\
{\rm{ = }}\dfrac{{25{0}}}{{100{0}}}kg\\
{\rm{ = 0}}{\rm{.25}}kg
\end{array}$

Complete step by step solution:
Step 1
  The mass of one egg = 50 g
Step 2
        Total mass given $ = 1kg$
                                       $ = 1000g$
Step 3
    Number of eggs $ = \dfrac{{{\rm{\text{total mass given (in grams)} }}}}{{{\rm{\text{mass of one egg (in grams)}}}}}$
                                 \[ = \dfrac{{1000g}}{{50g}}\]
                                 $ = \dfrac{{100{0}{g}}}{{5{0}{g}}}$
                                 $ = \dfrac{{100}}{5}$
                                 = 20 eggs

Therefore, There are 20 eggs in 1 kg, when the weight (or mass) of one egg is 50 g.

Additional information: The final answer should be in the simplest fraction. A fraction is said to be simplest (or lowest) if its numerator or denominator have no common factor except than 1.

Note:
Two quantities are divided only when their units are the same. For example, 1 kg cannot be divided by 50 g. Kilogram should be converted into grams or gram should be in kilograms.
 Kilograms is a bigger unit than grams.
To convert kilogram into gram, it is multiplied by 1000 and to convert grams into kilograms, it is divided by 1000. Some useful interconversion of units are as follows:
$1kg = 1000g$
$1g = 1000mg$
\[1g = \dfrac{1}{{1000}}kg\]
$1mg = \dfrac{1}{{1000}}g$
$1mg = \dfrac{1}{{1000 \times 1000}}kg$