Andy bought a box of fruit that weight 6 3/8 kilograms. If he bought a second box that weighed 7 2/5 kilograms, what's the combined weight of both boxes

Answer:13 13/40 kg

Step-by-step explanation:

First box weigh 6 3/8kg

Second box weigh 7 2/5kg

Total weight = 6 3/8 + 7 2/5

Total weight = (8x6+3) / 8 + (5x7+2) / 5

Total weight = 51/8 + 37/5

Total weight = (5x51+8x37) / 40

Total weight = (255+296) / 40

Total weight = 551/40=13 13/40 kg