+0  
 
0
40
1
avatar

You can mow 2 acres of your field in an hour andyour brother can mow 3 acres in 2 hours. Working together, how long will it take to mow a 14 acre field?

 Sep 8, 2020
 #1
avatar+26951 
+1

rate = acres/time

 

2 acres / 1 hour   +  3 acres / 2 hours =  14 acres / x hours

2/1 + 3/2 = 14/x

7/2 = 14/x

x = 14 * 2/7 = 4hours   for both working

 

 

Another way to look at it:

With both of you working , you can mow  3.5 acres each hour

 

14 acres / (3.5 acres/hr) = 4 hours

 Sep 8, 2020

40 Online Users