The answer is 79 because 29+31=60 & 60+19=79!!!!!!!!!!
(13+47+31+10+20+50+36+54+122+4)/60==(13+47+31+[10+20+50]+36+54+122+4)/60 =(13+47+31+80+[36+54]+122+4)/60=([13+47]+31+80+90+122+4)/60=(60+31+80+90+122+4)/60=(31+122+4+60+80+90)/60=(153+4+60+80+90)/60=(157+60+80+90)/60=(157+140+90)/60=(157+230)/60=387/606 min. 27 sec.
40 + 57 + 40 + 30 + 47 + 31 + 60 + 38 + 64 + 30 + 120 = 557
60
208
60% of 31= 60% * 31= 0.6 * 31= 18.6
360
3/5 + 2/3 +1/4 First find the lowest common denominator as 5x3x4 = 60 then we have 36/60 + 40/60 + 15/60 = 91/60 = 1 and 31/60
60+60+60+60+60+60+60+60 =480 All the addition can happen in the same step. This is the same as 60*8.
300 !
60 + 60 + 60 + 50 + 50 + 40 + 30 = 350
209 Having a calculator helps.