Question

A bag contains 1,2 and 5 coins in the ratio 5:9: 4 amounting to 129. Find the number of coins of each
type.​

Answer 1

Answer:

Let,

Coins of denominations Rs. 1= 5x

Coins of denominations Rs. 2= 9x

Coins of denominations Rs. 5= 4x

So,

Amount of Rs. 1= Rs. 5x*1  = Rs. 5x

Amount of Rs. 2= Rs. 9x*2  =Rs. 18x

Amount of Rs. 5= Rs. 4x*5  = Rs. 20x

A/q,

Amount of Rs. 1+Amount of Rs. 2+Amount of Rs. 5=129

5x+18x+20x=129

43x=129

x=129/43

x=3

Now,

Coins of denominations Rs. 1= 5x= 5*3=15

Coins of denominations Rs. 2= 9x=9*3=27

Coins of denominations Rs. 5= 4x=4*3=12

Answer 2

Answer:

5 : 9 : 4

________  = 36 , 20 , 45

    180

36 coins of 1 rupees

20 coins of 2 rupees

5 coins of 5 rupees