A purse contains ₹70 in 50 p and 25 p coins .if the number of 50 p coins is three times the number of 25 p, find the number of 50 p and 25 p coins
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ANSWER :
No.of 50 p coins = 120
No.of 25 p coins = 40
EXPLANATION :
Let the number of 50 p coins be x and 25 p coins be y
Rs 70 = 7000 paise
50x + 25y = 7000.........(1)
It is given that,
x = 3y
Substituting value of x in (1),
50(3y)+25y = 7000
150y + 25y = 7000
175 y = 7000
y = 7000/175 = 40
x = 3y = 3(40) = 120
No.of 50 p coins = 120
No.of 25 p coins = 40
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