The expression to find the number of charm sets Mrs.Thomson bought is written as 20 ÷ (3+c).
<u>Step-by-step explanation:</u>
It is given that, the jewelry store sells two types of charms which includes the heart charm and the character charm.
- The number of heart charms in one charm set = 3 heart charms.
- The number of character charms in one charm set = c character charms.
Therefore, the number of both heart & character charms in a set = (3+c) charms.
After buying several of these sets from the jewelry store,
- The total number of charms Mrs.Thompson had = 20 charms.
<u>To find the number of charm sets she bought :</u>
The expression can be formed as the total number of charms Mrs.Thomson had divided by the total number of charms in one charm set.
⇒ 20 = the total number of charms Mrs.Thomson had.
⇒ (3+c) = the number of charms in a charm set.
The expression to find the number of charm sets Mrs.Thomson bought is written as 20 ÷ (3+c).
For example, if the no.of character charm in the set is c = 1. Then the total number of charms in a set ⇒ (3+c) = 3+1 = 4.
The number of charm sets she bought can be calculated using the above expression.
⇒ 20 ÷ 4
⇒ 5 charm sets.
If c=1, then Mrs.Thomson bought 5 charms sets and she will have 20 charms with her.
