Question

The cost of one scarf if 10 cost Rs 25

Answer 1

Hey there,

-》 the cost of 10 scarf=Rs 25

-》Then, the cost of 1 scarf=25/10=2.5

therefor, the cost of 1 scarf=Rs 2.5

:-) Hope it helps

Answer 2

Given cost of ten scarfs is 25 .

let the cost of one scarf be x.

Cost of scars increases with number of scarfs. Hence, They are directly proportional [ $\frac{ x_{1}}{ x_{2} } = \frac{ y_{1}}{ y_{2} }$ ]
10/1 = 25/x

10x = 25

x = 25/10 = 5/2 = 2.5 .

Therefore, One scarf costs 2.5 rupees or 5/2 rupees