Ratio in Context Flashcards
1
Q
What is a ratio?
A
Ratios are used to show how things are shared. We can say there are a things for ever b objects and that is expressed as a:b.
2
Q
How can you simplify a ratio?
A
You can simplify a ratio in the same way you would do a fraction, by multiplying both sides by the same number. a : b = ac : bc.
3
Q
In a ratio of a : b, what fraction of the total is a?
A
a/a+b
4
Q
In a ratio of a : b, if you know a has a value of n, what’s b?
A
nb/a
5
Q
In a ratio of a : b, if you know a has a value of n, what’s the total?
A
n(a+b)/a
6
Q
What is a scale factor?
A
A relationship between two things, what one has to be multiplied by to get the other.
