Final answer:
To find the weight of each box, simplify the weight of one cupcake to 1/5 kg and then multiply by the number of cupcakes per box (6), resulting in each box weighing 6/5 kg or 1.2 kg.
Step-by-step explanation:
To calculate the weight of each box of cupcakes, we need to multiply the weight of one cupcake by the number of cupcakes in each box. Each cupcake weighs 3/15 kilograms, and there are 6 cupcakes in each box.
Firstly, simplify the weight of one cupcake: 3/15 kg simplifies to 1/5 kg since 3 and 15 have a common factor of 3. Now, multiply the simplified weight by the number of cupcakes per box:
Therefore, the weight of each box is 6/5 kilograms, or 1.2 kilograms.