Question

Ramami has 3 times as many two rupee coins as she has five-rupee coins.if she has in all sum rupees 77 , then how many coins of each denomination she have ?

Answer 1

consider 2 rs coins as 3x and 5 rs coin as x
now as 2rs coins are 3x =6x
5rs coin are x=5x
adding both =11x=77
x=7  
5rs coin =7 coins
2rs coin =7*3=21 coins

Answer 2

Answer:

Consider 2 rs coins as 3x and 5 rs coin as x

now as 2rs coins are 3x =6x

5rs coin are x=5x

adding both =11x=77

x=7

5rs coin =7 coins

2rs coin =7*3=21 coins