Level 2
The mass of Box X is 140 kg. The mass of Box Z is 20 kg more than the mass of Box X. The mass of Box Y is 50 kg less than the mass of Box Z. What is the mass of Box Y?
Level 3
There were 130 boys and 25 more girls than boys at a concert. There were also 90 more adults than boys. How many people were at the concert altogether?
Level 3
Carrie wanted to decorate 3 cakes. She needed 4 kg of chocolate to decorate each cake. The mass of each packet of chocolate was 2 kg. How many such packets of chocolate did she need?
Level 3
Ben had some flour. He used the same amount of flour each day. By the end of Day 5, he had 590 g of flour left. At the end of Day 6, he had 540 g of flour left. How much flour did Ben have at first?
