Answer:
John have $36 and he should give $48 to his brother for both to have equal money.
Step-by-step explanation:
Given that,
amount of money John have = $84
amount of money John's brother owed to her friend = $12
$12 of the $84 is going to his brother's friend, that leaves $72 for John and his brother.
If they are to finish with the same amount, then each should have half of the John's money after he paid $12
So,
72/2
= 36 each
but since John's brother have to give 12 rupees in debt so
36+12
= $48
So John should have $36 and he should give $48 to his brother.
Answer:

Step-by-step explanation:
Given


Required

First, calculate 
We have:

This gives:

Substitute 


Substitute 



Split

This gives

Answer:
A
Step-by-step explanation:
firstly you have to find the rate of change of the various price index in percentage.
A, From 106 to 112:
we find the difference 112-106 = 6
then the rate of change = 6/106 * 100 = 5.66%.
B ,From 112 to 118:
we find the difference 118-112 = 6
then the rate of change = 6/118 * 100 = 5.36%.
C ,From 118 to 124:
we find the difference 124-118 = 6
then the rate of change = 6/124 * 100 = 5.08%.
we can see that the price index with the greatest percentage is A.
Answer:

Step-by-step explanation:
Given


Required
Solve graphically
See attachment for graph;
The black shade represents
While the green, represents 
Next, determine the intersection points between the two lines
From the attached graph, we have:

<em>Hence, the solution is:</em>