Seeta Devi has Rs 9 in fifty-paise and twenty five-paise coins. She ha

1.	Seeta Devi has Rs 9 in fifty-paise and twenty five-paise coins. She has twice as many twenty- five paise coins as she has fifty- paise coins. How many coins of each kind does she have?
Answer» Let the number of fifty paise coins be x Number of twenty five paise coins be 2x Amount due to fifty paise coins = (50×x)/100 = 0.50x Amount due to twenty five paise coins = (25×2x)/100 = 0.50x So the total amount is Rs 9 0.50x + 0.50x = 9 1x = 9 x = 9 ∴ The number of fifty paise coins is x = 9 Number of twenty five paise coins, 2x = 2×9 = 18

Seeta Devi has Rs 9 in fifty-paise and twenty five-paise coins. She has twice as many twenty- five paise coins as she has fifty- paise coins. How many coins of each kind does she have?

Answer»

Let the number of fifty paise coins be x

Number of twenty five paise coins be 2x

Amount due to fifty paise coins = (50×x)/100 = 0.50x

Amount due to twenty five paise coins = (25×2x)/100 = 0.50x

So the total amount is Rs 9

0.50x + 0.50x = 9

1x = 9

x = 9

∴ The number of fifty paise coins is x = 9

Number of twenty five paise coins, 2x = 2×9 = 18