Seeta devi has rupees 9 in 50 paise and 25 paise coins she has twice as many 25 paise coins as she has 50 paise coins . How many coins of each kind does she have?
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let no. of 50 paise coins be x and that of 25 paise be y
then 50x + 25y = 900 ........ (1)
as 9 rs = 900 paise
also given y = 2x ....... (2)
substituting value of y from (2) in (1)
we get 100x =900 or x = 9
and y = 18
Thus no. of 50 paise coins are 9 and those of 25 paise coins are 18.
Hope you get it. :)
then 50x + 25y = 900 ........ (1)
as 9 rs = 900 paise
also given y = 2x ....... (2)
substituting value of y from (2) in (1)
we get 100x =900 or x = 9
and y = 18
Thus no. of 50 paise coins are 9 and those of 25 paise coins are 18.
Hope you get it. :)
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