A salesman travelled 2/5 of his journey before lunch and 3/8 of his journey after lunch.
What fraction of his journey has he still to complete?

Please explain how you got the answer step by step to help me learn.
Thanks!

5/12, or 5: 12

step-by-step explanation:

part a

x     y

0     8

1     7.5

2     7

3     6.5

4     6

5     5.5  

for every hour i deducted .5 inches from the length of the candle

part b

it is a function because for every x value there is only one y value

part   c

for every x value there is only one y value

x       y

0       8

1       7.6

2       7.2

3       6.8

step-by-step explanation: