Answer:
120
Explanation:
Calculation for how much of good A will she purchase
First step is to calculate Qa
1 / 0.5Qa = 1 / 4Qb
0.5Qa = 4Qb
Qa = 4 / 0.5 Qb
Qa = 8Qb
Second step is to calculate Qb
Qb = 120/8
Qb = 15
Now let calculate how much of good A will she purchase
Using this formula
Good A=Qa* Qb
Good A= 15 * 8
Good A = 120
Therefore how much of good A will she purchase is 120