Look at some shorter periods of time to decide whether their reasonable. Do that by simplifying the fraction. . . . . 40,000 pounds / 80 years = 4,000 pounds / 8 years = 2,000 pounds (1 ton) / 4 years = 1,000 pounds / 2 years (have you decided yet ? Well, simplify it some more) 1,000 pounds / 2 years = 500 pounds per year = almost 1 and 1/2 pounds of bread every day of your life. NOW what do you think ? Make sense ?
5/9 is closer to 1
Hope this helps!
A=bh which means 900=50x18
I will go less as i write them:
.4 .04 .004 .0004
33/8 < exact form
4.125 < decimal form
4 1/8 < mixed number form