4 tins of soup have a total weight of 1120 grams
3 tins of soup and 5 packets of soup have a total weight of 1015 grams
work out the total weight of 5 tins of soup and 2 packets of soup

grams = g4 tins of soup = 1120g1 tin of soup = 1120/4 = 280g3 tins of soup = 3x280g = 840g5 packets of soup = 1015g - 840g = 175g1 packet of soup = 175g/5 = 35g5 tins of soup + 2 packets of soup =(5x280)g + (2x35)g = 1400g + 70g= 1470g