cost of 4 pen is 7rs while the cost of 3 pen is 10rs how?
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cost of 4 pens =₹7
cost of 1 pen =₹7/4
cost of 3 pens=₹7×3/4
cost of 3 pens=₹21/4
cost of 3 pens=₹5.25
hope this answer will help you.
cost of 1 pen =₹7/4
cost of 3 pens=₹7×3/4
cost of 3 pens=₹21/4
cost of 3 pens=₹5.25
hope this answer will help you.
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