Question

the loss made by selling 10m of a cloth equals to the cost price of 3m of the same cloth. find the loss percentage

Answer 1

10 SP = 3 C P
let C P = 1
10 SP = 3
1 SP  =  3/10
loss = C P - SP
        = 1 - 3/10
        = 10/10 - 3/10
        = 7/10
loss % = (loss / C P) x 100
            = 7/10 x 100
            = 70%