+1491 All this is some simple cross multiplication, I'm sure you know how but if not I'll demonstrate.
We start with:
45 = 18
20 p
Multiply 45 by p and 18 by 20:
45p=360
Use algebra and....
p=8
Hope this helped c:
+1491 All this is some simple cross multiplication, I'm sure you know how but if not I'll demonstrate.
We start with:
45 = 18
20 p
Multiply 45 by p and 18 by 20:
45p=360
Use algebra and....
p=8
Hope this helped c:
