120x4
There will be 480 boxes in 4 minutes.2 boxes/second = 120 boxes/minute(1 min = 60 sec and 2x60=120)120x4=480-----answered by FAT
add up the two weights. 150+120=170. now divide that by 10. 170 divided by 10 is 17. that is the answer(:math........so confusing.that is not possible. immagine someone weighing 17kg. it should be (150X6 + 120X4)divided by 2 which equals 138 kilosThe full answer isthe 6 boys weigh a total of 6 x 150 = 900lbthe 4 girls weigh a total of 4 x 120 = 480lbthe total weight of all 10 kids is 900 + 480 = 1380lbthe average weight of the 10 kids is 1380 / 10 = 138lb