Mary has a total of ₹ 300 in coins of denomination ₹1, ₹2 and ₹5 the no of ₹2 coins is 3 times the no of ₹5 coins the total no of coins is 160 how many coins of each destination
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Let no. of ₹5 coin = x. Value = 5x
No. of ₹2 coin = 3x. Value = 6x
No. of ₹1 coin = 160 - 4x. Value = 160-4x
Given total Value = 300
5x + 6x + 160 - 4x = 300
7x + 160= 300
x = 140/7= 20
Therefore
no. of ₹5 coin = x = 20
No. of ₹2 coin = 3x = 60
No. of ₹1 coin = 160 - 4x = 80
No. of ₹2 coin = 3x. Value = 6x
No. of ₹1 coin = 160 - 4x. Value = 160-4x
Given total Value = 300
5x + 6x + 160 - 4x = 300
7x + 160= 300
x = 140/7= 20
Therefore
no. of ₹5 coin = x = 20
No. of ₹2 coin = 3x = 60
No. of ₹1 coin = 160 - 4x = 80
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