Question

Marked price of a wrist watch is Rs 1,300 and
it is sold for Rs 1,170. Find the discount
percent allowed on the watch.​

Answer 1

Step-by-step explanation:

If the minute hand moved full circle (1 hour), it would have gone 2π•6 in. But it only goes for 20 minutes, which is 1/3 of an hour. So, the distance is (12π)/3 inches, or 4π inches. That's approximately 12.566 inches.