Question

if a student pays Rs1700 for a month then what amount will he pay for 20 days?​

Answer 1

Let charge for staying be X

Let charge for staying be Xlet charge for food be y

Let charge for staying be Xlet charge for food be yfirst,

Let charge for staying be Xlet charge for food be yfirst,X+20y=1700

Let charge for staying be Xlet charge for food be yfirst,X+20y=1700then Rahim,

Let charge for staying be Xlet charge for food be yfirst,X+20y=1700then Rahim,X +24y=1900

Let charge for staying be Xlet charge for food be yfirst,X+20y=1700then Rahim,X +24y=1900subtracting both equations,

Let charge for staying be Xlet charge for food be yfirst,X+20y=1700then Rahim,X +24y=1900subtracting both equations,we get y=50,

then putting the value in one equation ,

we get X=700