Answer:
1. Fed wants to increase by $35 million.
First find money multiplier:
= 1 / required reserves ratio
= 1 / 10%
= 10
Increase in money supply = Multiplier * Open market purchase
Open market purchase = Increase in money supply / Multiplier
= 35 million / 10
= $3.5 million
2. Fed wants to increase by $60 million.
Multiplier = 1 / 15%
= 6.667
Open market purchase = 60 million / 6.667
= $9 million
3. C. a larger open market purchase and a larger open market sale.
The Fed would have to buy more securities than before so that it can put in more money into the system such that even if banks decide to hold on to excess reserves, there would still be enough money circulating to achieve the Fed's objectives.