overall profit percentage

Raju bought a mobile and sold it to Varun at a profit of 50%. After some days, Varun sold it back to Raju at 40% loss, and Raju then sold it to Giri at 30% profit. Find overall profit percentage of Raju.

Raju bought a mobile and sold it to Varun at a profit of 50%. After some days, Varun sold it back to Raju at 40% loss, and Raju then sold it to Giri at 30% profit. Find overall profit percentage of Raju.