3 times 5 times 2.5 = $37.5
3 x 5 =15
15 x 2.5 =37.5
37.5 x 2 = 75 for both of them
I don't know if this is right or not, but that's how I would solve it!
A ) 15 I think because it the lowest number!
3 1/2 - 1 + 6 1/2= 9 feet is how far he walked
The elevator will be on the 76th floor in 60 seconds.