While helping someone with a college placement test I've run across two practice word problems that basically ask the same yet I'm not understanding the logic behind the answer. Here is problem one...
Joe worked part time for x hours and earned y dollars. How much does he earn if he works z hours?
A) yz/x
B) z/(xy)
C) xyz
D) zx/y
E) xy/z
The answer key shows 'A' is the correct answer.
Here is a similar problem but worded differently...
If the total cost of x apples is b cents, what is a general formula for the cost, in cents,
of y apples?
Both questions (problems) seem so glib. I need an explanation on how to translate these into formulas.
Thanks
Joe worked part time for x hours and earned y dollars. How much does he earn if he works z hours?
A) yz/x
B) z/(xy)
C) xyz
D) zx/y
E) xy/z
The answer key shows 'A' is the correct answer.
Here is a similar problem but worded differently...
If the total cost of x apples is b cents, what is a general formula for the cost, in cents,
of y apples?
Both questions (problems) seem so glib. I need an explanation on how to translate these into formulas.
Thanks