Answer:
638 rupees
Step-by-step explanation:
The radio cost him x.
He sold it at a 10% profit for for x + 10% of x which is the same as 1.1x
1.1x = 605
x = 605/1.1 = 550 rupees
It cost him 550 rupees.
To gain a 16% profit, he must sell it for 550 rupees + 16% of 550 rupees
That is the same as 116% of 550 rupees or 1.16 * 550 rupees
1.16 * 550 rupees = 638 rupees
Answer: 638 rupees
