Answer:
Step-by-step explanation:
1/7+1/13=1/t
multiply both sides by 7*13*t
13t+7t=7*13
21t=91
t=91/19
it will take 4 hours and 8 minutes
It has infinite solution or many solutions.
The steps are on paper.
Are you trying to find a?
Step-by-step explanation:
The highest common factor is found by multiplying all the factors which appear in both lists: So the HCF of 60 and 72 is 2 × 2 × 3 which is 12.
So the pencils all together would be $6 so divide that by 3 and you get D as your answer each pencil costs $2
