i borrowed 250 and 250 from each of my two friends which makes 500 i bought a shirt of 450 and saved 50 then i gave 30 rupees to my friend on credit in the remainung 20 rupees i returned 10 10 rupees to my friends to whom i borrowed 250 250 now i owe 240 and 240 to each of my friend which makes 480+ 30 that i gave to my friend on credit and 20 that i returned them back the total is 480+30+20=510 but i borrowed only 500 answer me please