The cost of 7 pens is rupees 15.What is the cost of 21 pens?.
Answers
Answered by
5
Answer:
Given,
The cost if 7 pens = 15 rupees.
Therefore,
The cost of 1 pen = 15/7 rupees.
Therefore,
The cost of 21 pens = 15/7×21=15×3=45 rupees.
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Answered by
3
Answer:
Step-by-step explanation:
7pen=15
1pen=15/7
21pen=15/7×21
= 15×3=45
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