We are given that ratio of cars Sam has built to cars Tyrone has built is 3:4.
Let us assume that Sam built 
cars and Tyrone built 
.
Since we are given that total number of cars they built is 42. Therefore, we can set up:
Therefore, Sam built 
cars and Tyrone built 
cars.
Answer:
x=-3, y=-8
Step-by-step explanation:
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Answer:
20
Step-by-step explanation:
Just write down the answer.
We can put this information into two equations:
7 booklets = 140 stamps
3 booklets = 60 stamps
Let us then focus on one equation to find the relationship:
7 booklets = 140 stamps
If we put that into a fraction, we get
or
.
This means that for every booklet, Ashley gets 20 stamps; or rather, each booklet has 20 stamps.
We can then see that this relationship holds true for the second equation as well:
or
.
To write a general equation for this relationship using
p for the number of postage stamps, and
b for the number of booklets:
p = 20b
Where
b is equal to
p.
