joan can mow a 3-acre field in 4 hours. how ling will it take her to mow a 2-acre field?
4hr/3 ac * 2 ac = 8/3 hr
To find out how long it will take Joan to mow a 2-acre field, we can set up a proportion using the relationship between the area of the field and the time it takes to mow it.
The proportion can be expressed as:
3 acres / 4 hours = 2 acres / x hours
To solve for x (the time it will take to mow the 2-acre field), we can cross-multiply and solve for x.
(3 acres) * (x hours) = (2 acres) * (4 hours)
Now, we can simplify the equation:
3x = 8
To isolate x, divide both sides of the equation by 3:
x = 8 / 3
So, it will take Joan approximately 8/3 hours, or 2 hours and 40 minutes, to mow a 2-acre field.