Question

the number of one rupee coins in three times the number of two rupees coins.if the worth of the coins is RS.120,find the number of 1 rupee coins

Answer 1

now see, let no. of two rupees coin is x. so no of one rupees coin is 3x. now x+3x =4x=120 so . x=30. so now of 1rs coin is 3×30=90