Answer:

Here

selling price (S.P.)=Rs.800

Profit=20%

Profit amount=20÷100×800=160

Now,

Cost price (C.P)=S.P - P=800-160=640

So,the shopkeeper cost Rs.640 for that bed.

Step-by-step explanation:

I hope you understand.

Answer:

Step-by-step explanation:

20%=1/5 then cp is 5 and sp is 6

Then 6=800 And 5=(800×5)/6=666.67