Question

We fill 20 jars with jam, 0f 3 different sizes. The 20 filled jars weigh 16.8 kg In total. The Jars are arranged on three shelves, as shown In the picture

below so that each shelf carries the same weight. What is the weight (in kg) of each type of filled jar? (Round your answers to 1 digit after the decimal place if needed)

Fig: 1