F+s=95
f=s+27
s+27+s=95
2s=95-27
sixth graders = 34
fith graders = 61
E= MC2 sfbjwkfcbu'ao{Isfbobczc zmcnoiaokncklznlksnc
183,308,190 that is the standard form
The article is 10 lbs...so 20 of them = (10 * 20) = 200 lbs
the box is 1/2 lb....so 20 of them = (1/2 * 20) = 10 lbs
the freight container is 15 lbs
for a total of : 200 + 10 + 15 = 225 lbs <==
