Seeta devi has Rs 9 in fifty-paise and twenty-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?
Answers
Let us assume the number of fifty paise coins to be 'a'.
Let us assume the number of twenty five paise coins to be '2a'.
The total amount of money that Seeta Devi has with her is 9 Rupees.
Calculating:
According to the question amount of fifty paise coins:
= 50 x a / 100
= 5 a/10
= Rs. 0.5 a --------------------Equation (1)
According to the question amount of twenty five paise coins
= 25 x 2 a / 100
= 2 a / 4
= 1 a / 2
= Rs. 0.5 a -------------------------Equation (2)
According to question:
0.5 a + 0.5 a = 9
1 a = 9
Taking 1 to the other side of the equation we get:
a = 9 / 1
a = 9
Therefore, the number of fifty paise coins Seeta Devi has is 9 Fifty Paise Coins.
Therefore, the number of twenty five paise coinds Seet Devi has is
= 9 x 2
= 18 Twenty Five Paise Coins
(Since it is told to us in this question she has twice as many twenty five paise coins)
Answer:Let us assume the number of fifty paise coins to be 'a'.
Let us assume the number of twenty five paise coins to be '2a'.
The total amount of money that Seeta Devi has with her is 9 Rupees.
Calculating:
According to the question amount of fifty paise coins:
= 50 x a / 100
= 5 a/10
= Rs. 0.5 a --------------------Equation (1)
According to the question amount of twenty five paise coins
= 25 x 2 a / 100
= 2 a / 4
= 1 a / 2
= Rs. 0.5 a -------------------------Equation (2)
According to question:
0.5 a + 0.5 a = 9
1 a = 9
Taking 1 to the other side of the equation we get:
a = 9 / 1
a = 9
Therefore, the number of fifty paise coins Seeta Devi has is 9 Fifty Paise Coins.
Therefore, the number of twenty five paise coinds Seet Devi has is
= 9 x 2
= 18 Twenty Five Paise Coins
(Since it is told to us in this question she has twice as many twenty five paise coins)
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