Since if he gets the driveway done in 20 minutes he gets 1/20th of the driveway done in 1 minute (if x=20 then x/20=1 by dividing both sides by 20) and if his brother gets 1/12th of the driveway done in one minute, then if t represents the time it takes to shovel the driveway, t/20+t/12=1 driveway shoveled as 1/20+1/12=amount they can do in 1 minute, so t/20+t/12 is how much they can do in t minutes. Multiplying both sides by 20*12=240, we get 12t+20t=32t=240. Dividing both sides by 32, we get 240/32=7.5 minutes to shovel the driveway.
1st part: 3x9x3
2nd part: 3x6x9
3rd part: add the product of those two steps
you have to break it down into two rectangular prisms and find the volume of each and then add
Answer:
3
Step-by-step explanation:
5+3=8 and on a number line 5 and 8 and 3 numbers away
A=9,805×(1+0.085×7÷12)
A=10,291.16
The answer is 6/5 (six over five) 100 divided by 20
