Level 3
Lina put 120 eggs on some big trays and small trays. She put 6 eggs on each big tray and 4 eggs on each small tray. She used the same number of big trays and small trays. How many trays did Lina use altogether?
Level 3 Jonas took one Math test. For every correct answer, he was awarded 4 points. For every wrong answer, 2 points were deducted. 21 out of 30 questions he answered were correct. How many points did he score?
Level 2
Mr Smith saved a total of $8540 in 6 months. In the first 4 months, he saved $1210 each month. In the 5th month, he saved $1530. How much did he save in the 6th month?