Bob and joe both donated money to the same charity. bob gave three times as much as joe. between the two of them, they donated $280. how much money did joe give?

$70

Step-by-step explanation:

Joe's Donation = x

Bob's Donation = 3x

Total Donation = $280

Joe's Donation + Bob's Donation = Total Donation

x + 3x =$280

4x = $280

4x/4 = $280/4

x = $70

b

step-by-step explanation:

step-by-step explanation:

i'm pretty sure it would take 20 hours because it's half the men so you multiply the number of hours it takes by 2