Tushar

It depends on the number of subjects you're teaching. Then it depends on the location that whether students are coming at your place or you're going over there.(because then your travel time becomes the factor) For a group of 5-6 students of 9th or 10th class for maths 1000-2000 is optimal amount you can charge considering all the factors

The sun rises two hours earlier in Arunachal Pradesh as compared to Gujarat in the west but the watches show the same time. How does this happen?

Concept : We have set some standards to avoid hastle in the domestic time zone. It can be understood as why 1kg=1000gram only.Not 1200g or 1500g. This is due to the metric conventions we have set far earlier. To be price 1kg is the weight of platinum-iridium alloy which should be 39.17 mm both in diameter and height. Answer : From Gujarat to Arunachal Pradesh there is a time lag of two hours, but the watches show the same time because the time along the Standard Meridian of India (82° 30' E) passing through Mirzapur in Uttar Pradesh is taken as the standard time for the whole country. Because the same standard time for the whole country has been adopted, the watches show the same time in Arunachal Pradesh and Gujarat and in all parts of the country. Hope i didn't messed up your neurons.LOL