Manju has Rs 90 in her piggy bank in Rs 1 coins and 50 paise coins. if the number of Rs 1 coins is twice that of 50 paise coins,how many coins of each kind are there ?
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let number of 50 paise coins= x
number of 1 rupee coins = twice the number of 50 paise coins
=2x
total amount =Rs90
50x+100×2x=9000 all converted to paise
50x+200x=9000
250x=9000
x=9000/250
x=36
therefore
number of 50 paise coins= x=36
number of 1 rupee coins=2x=2×36=72
number of 1 rupee coins = twice the number of 50 paise coins
=2x
total amount =Rs90
50x+100×2x=9000 all converted to paise
50x+200x=9000
250x=9000
x=9000/250
x=36
therefore
number of 50 paise coins= x=36
number of 1 rupee coins=2x=2×36=72
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