Respuesta :
Answer:
Here, c represents the cost of one greeting cards,
Since, each card costs same,
Thus, the cost of 3 greeting cards = 3 × the cost of one greeting cards
= 3 × c
= 3c
According to the question,
The cost of 3 greeting cards = $ 12.69
⇒ 3c = 12.69
Which is the required equation that represents the given situation,
After solving this,
We get,
c = 4.32,
Thus, the cost of one card is $ 4.32.
Which is the required solution.
