56/25= $2.24 per gallon (Wow that's a lot)
32.05/15= $2.14 per gallon (Better....but not really)
It would be best to buy 15 gallons for $32.05
Answer:
4 hours
Step-by-step explanation:
Ratio of working together
Job : number of hours
1 : 3 = 1/3
Trainer
Job : number of hours
1 : x = 1/x
Trainee
Job : number of hours
1 : 3x = 1/3x
1/x + 1/3x = 1/3
Multiply through by 3x
3x(1/x) + 3x(1/3x) = 3x(1/3)
3 + 1 = x
4 = x
x = 4 hours
It takes the trainee 4 hours to finish the job
Answer:
There are 48 marbles in the bag
Step-by-step explanation:
red: blue : total
3 8
there are 18 red
18/3 = 6
Multiply everything by 6
3*6 8*6
18 48
There are 48 marbles in the bag
6.040892193 E-4
which equals to
0.000604<span>0892193
move your decimal place 4 units to the left
because it's a negative (E-4), which makes your number smaller
OR
multiply that number by 10^-4</span>
