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
Johnson had some apples and oranges. The number of apples and oranges left were the same after Johnson sold 23 of the apples and 47 of the oranges. If he had 324 apples at first,
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
Esther had $350 more than Kevin. Esther spent 34 of her money and Kevin spent 47 of his money. In the end, Kevin and Esther had the same amount left. Find the amount of money that Kevin had at first.
Level 3
Rebecca spent $18 on a plate, a bowl and 2 cups. Each plate cost $3 more than a cup and each bowl cost $2 more than a plate. Find the cost of a dozen cups .