+0  
 
0
91
1
avatar

Shortly after 9 'o clock, the hands of a clock made a 139-degree angle. What's the time?

 Jun 17, 2021
 #1
avatar+114920 
+1

It will be x minutes past 9

 

Big hand  360/60 * x = 6x  degrees  (past 12)

 

Little hand = -90+x/2 

 

difference =  6x- (-90+x/2) = 6x+90 - x/2 = 90+ 11x/2

 

90+11x/2 = 139

11x/2       =  49

11x          =  98

x =8.909090....

x approx = 8 min  55 sec

 

It is approx  8 minutes and 55 sec past 9

 Jun 17, 2021

31 Online Users

avatar
avatar
avatar