above is question no.8. and I m writing now question no. 9 below .

in the same shop (as in question number 8) under the same condition of discount, find the marked price of the articles whose selling price are given below .
a. A jacket was sold at rupees 1440.
b. a pair of jeans was sold at rupees 1080.
c. music system was sold at rupees 7200.
d. ek colour television set was sold at rupees 10080.

Now, please please solve the answer... plz plz it's very very very very urgent ​