A family spends 30% of its income on house rent and 60% of the rest on house hold expenses. If the total savings of the family is ₹ 12,600 per month, find the total monthly income of the family.

Geeta saves 20% of her monthly salary and saves ₹ 43,500 per month. Find her monthly expenditure.

A number is increased by 30% and then this increased number is decreased by 30%. Find the net change.

A number is decreased by 30% and then this decreased number is increased by 30%. Find the net change as percent.