Level 3
A box containing 60 folders had a mass of 5.01 kg. A box containing 25 post-it-pads has a mass of 6.21 kg. The mass of each post-it-pad was thrice that of each folder. Find the mass of the empty box in grams.
Level 3
At the bird park were some adults. 12 of the number of tourists was equal to 2 times the number of locals. When another 19 tourists entered and 51 tourists left, the ratio of the number of tourists to the number of locals become 7 : 2. Find the number of tourists at the bird park at first.
Level 3
Mr Yap bought some pizzas for a group of pupils. There is an equal number of girls and boys. The girls received 5 times as many pizzas as the boys. Each boy ate 13
of a pizza and the boys finished all the pizzas given to them. Each girl ate 16 of a pizza and the girls had 18 12
pizzas left. How many pizzas did Mr Yap buy?
Level 3
Anisha's monthly salary is $3451. She gives 27 of it to her mother and spends twice as much on daily expenses. If she saves the rest of the money, how much does she save in a year?
