# A man changed one 100 rupee note into 10 rupees and 20 rupees note. if he got seven notes in all , how many notes are there in each kind?

2
by sinam

let the no. of 10 rupee note be x and no. of 20 rupee note be y given is x + y = 7 and we have 10x + 20y = 100 by solving this two equations you can get the no of notes of each kind i.e. x = 4 and y = 3

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