Question

1. Find the cost price C of an article selling at S after a
30% loss.
the answer is 10S/7
plz show the calculations!​

Answer 1

142 is the answer

I think.

I am little week at math.

Hope it helps you dear.

Answer 2

Answer:

Answer is 10S/7

Step-by-step explanation:

the cost price is C

selling price is S

loss=30%

C=S+30%ofC

C=S+30/100*C

C-30/100*C=S

S=C-30C/100

S=100C-30C/100

S=70C/100

70C=100S (by cross multiply)

C=100S/70

C=10S/7