A total sum of ₹400 in the coins of denomination ₹2,₹5 and ₹10. The number of ₹2 coins is 4 times the number
of ₹ 5 coins. The total number of coins is 94. How many coins of each denomination are there?
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Answer:
Let the number of conins of each denomination be x
Given, x×1+x×
2
1
+x×
4
1
+x×
10
1
+x×
20
1
=380
⇒
20
20x+10x+5x+2x+x
=380
⇒
20
38x
=380
⇒x=
38
380×20 =200
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