Answer:
Explanation:
If 7 pens cost Rs. 700, then we can easily determine the cost of 1 pen:
7p=700, where p=the number of pens
Divide both sides by 7 to isolate p:
p=100
The cost of 1 pen is:
Rs. 100 (Answer)
Hope you find it helpful.
Feel free to ask if you have any doubts.