Question

answer of 38 and 40 I want fast

Answer 1

let the sp be rs 100
loss = 1/9 of sp
1/9×100
=100/9
cp=sp+l
=100+100/9
=1000/9
l%=l/cp×100
=[(100/9)/(1000/9)]×100
=1/10×100
=10%
the loss is 10%