1.

1. A piggy bank full of one rupee and fifty paise coins. It contains 3 times as many fifty paise coins as one rupee coins. the total amount of money in the piggy bank is rupee 45 . how many coins of each kind are there in piggy bank

Answer»

Let fifty paise coins be X
let 1 rupee coins be y
then, 3X = y. ---------------1eq.
x + y = 45 ------------------------2eq.
taking eq. 1 we get
y= 3x
then put y= 3x in eq.2 to get value of x
x + 3x = 45
4x = 45
x = 45/4
put x = 45/4 in eq.1
y = 3 (45/4)
y = 135 /4


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