Final answer:
To express the first quantity as a fraction of the second quantity, convert either 700 g to kg or 1.4 kg to g. Then divide the converted quantities to find the fraction.
Step-by-step explanation:
To express the first quantity as a fraction of the second quantity, we need to convert both quantities to the same unit. In this case, we need to convert either 700 g to kg or 1.4 kg to g.
To convert 700 g to kg, we divide by 1000: 700 g ÷ 1000 = 0.7 kg.
Now we can express the first quantity, 700 g, as a fraction of the second quantity, 1.4 kg, by dividing 0.7 kg by 1.4 kg:
0.7 kg / 1.4 kg = 0.5
Therefore, the first quantity, 700 g, is equal to 0.5 of the second quantity, 1.4 kg.