Question

A sum of rs36.90 is made up of 180 coins which are either 10paise or 25paise coins. The nos of 10paise coins is? 1

Answer 1

Answer:

54

Step-by-step explanation:

let 10 p coin=x

then 25p coin=180-x

then total amount

=x*10/100+(180-x)*25/100=36.90

x/10+(180-x)*1/4=36.9

multiply by 20 we get

2x+5*(180-x)=36.9*20

2x+5*180-5x=738

-3x=738-900

-3x=-162

x=162/3=54

so no. of 10 paise coin=54