Question

There are total 36 coins of 10 paisa and 20 paisa . the total value of these coins is rs.6.60. what is the number of 20 paise coins

Answer 1

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Explanation:

Let x represent 10 ps coin

and y represent 20 ps coin

x + y = 36

0.10x + 0.20y = 6.60

0.10x + 0.10y = 3.60

0.10y = 3.00

y = 30

The number of 20 ps coin is 30.