Answer: Interest rate can vary
Explanation: Based on the description of Greg's and Joyce's mortgage loan, the key term is the adjustable nature of the loan used to finance the mortgage. Being adjustable simply means not fixated. Hence, the interest on the loan is bound to change throughout the entire period of the loan. This type of mortgage loans are called ADJUSTABLE RATE MORTGAGE or FLOATING mortgage. The change in the interest rate applied on the outstanding balance of is usually at intervals which could be annually, semianually or monthly basis as the case may be.
Solution:
Let's start by assuming that the taxi ride demand is extremely elastic, to the extent that it is vertically sluggish! If the cabbies raise the fair price by 10% from 10.00 per mile to 11.00 per kilometre, the number of riders remains 20.
Total income before fair growth= 20* 10= 200.
Total income following fair growth = 11* 20= 220.
A 10% increase in the fare therefore leads to a 10% increase in the driver's revenue.
Therefore, the assumption in this situation is that the cab drivers think the taxi driving requirement is highly inelastic.
The demand curve facing the drivers of the cab is still inelastic, but not vertically bent.
When the rate increased from 10% to 11, riders declined from 20% to 19%
Total revenue before fair growth is 20* 10= 200
The gap between revenue and fair growth is 19* 11= 209
This means that a realistic 10% raise doesn't result in a 10% boost on income Because the market curve for taxi rides is not 100% inelastic, but rather low inelastic, so that a fair increase (control) allows consumers to lose their incomes.
