The diagram shows the distance between my home, H, and two towns, A and B. It also shows information about journey times.
A
H
B
10 miles
Journey time
20 minutes
20 miles
Journey time
30 minutes
a)
What is the average speed of the journey from my home town to A?
b)
What is the average speed of the journey from my home town to B?
c)
I drive from town A to my home and then to town B.
The journey time is 50 minutes.
What is my average speed?

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.