Level 3
A puppy is 5220 g heavier than a cat. The total mass of the 2 animals is 11 kg. What is the mass of the puppy?
(Give the answer in kilograms and grams.)
Level 3
The total weight of 5 cartons and 7 crates of apples is 130 kg. Each crate of apples weighs thrice as heavy as a carton of apples. How much does each carton of apples weigh?