Answer: Option A
Explanation: A money based payment system is the one in which the transactions involving exchange of goods and services are performed by using a common denomination called money. In such a system any commodity can be valued on the basis of money.
However in a barter system one commodity is exchanged for the other. Therefore, the double coincidence of wants is needed for fulfilling these transactions. The actual value cannot be determined for any commodity.
From the above we can conclude that the correct option is B.
... are called renewable resources
Answer:
<u> Fire trucks
</u>
Explanation:
Assume Miles buys a set of building blocks at $50. This increases his utility by 100 units. But in $50, he can buy 2.5 units of fire trucks and his utility can increase by 80*2.5 = 200 units. In $50, he can buy 10 trains and his utility can increase by 15*10=150 units. Since by spending $50 on fire trucks Miles gets maximum utility, he will buy fire trucks.
I think he is showing signs of not being able to use his skills, and doubt in himself