Answer:
4/12 simplified to 1/3 of rolling 2 times.
Step-by-step explanation:
Answer:
4/9
Step-by-step explanation:
The slope of these points would be: (5-1)/(3+6) = 4/9
Answer:
15 and 5 hours.
Step-by-step explanation:
Call x the time taken by the first chap, and y the second.
Let's divide by 5 and play with the LHS of the first equation a bit:
we know how much x+y is ( first equation!) let's solve.
At this point it's easy to check that 
1/4 an hour is 60 divided by 4 times 1 which is 15 minutes.
3/5 an hour is 60 divided by 5 times 3 which is 36 minutes.
15 plus 36 equals 51 minutes which is less than 1 hour.
