Question about people's income and prices. (Principles of Economics - N.Gregory Mankiw)?

Question

Suppose that when everyone wakes up tomorrow, they discover that the government has given them an additional amount of money equal to the amount they already had. Explain what effect this doubling of the money supply will like have on the following:
a. the total amount spent on goods and services
b. the quantity of goods and services purchased if prices are sticky.
c. the prices of goods and services if prices can adjust

Answer 1

The economic problem of inflation is "too much money chasing too few goods". A doubling of the money supply will make prices increase as you have much more money to get the same amount of goods.

Ammount spent on g&s will increase.

Sticky prices - shortages of these goods, Increase in prices when goods become available.

Prices will increase but not necessarily double.

Answer 2

A) The total amount spent will rise. If everyone had more money, more spending would occur.

B) According to supply and demand, if prices are fixed regardless of the increase in demand the suppliers will still only be willing to offer the same quantity

C) According to supply and demand, if the demand is raised for a product, the supply will increase to meet that demand as prices rise. Therefore, the prices will rise until a new supply-demand equilibrium is reached.

Answer 3

many websites have the factual answer for your questions much more you include the author's name.

In my own opinion, i think there was no change simply because you double the money but at the same time you double also the price of goods and services. So what's the change???