Sarah has enough flour to bake either 12s muffins or 9r croissants. If she has finished baking 40 muffins and 3r croissants, how many more muffins can she still bake in terms of s?
2 m
Some is leaking from a crack of a bottle. After z minutes, the volume, V, of the oil left in the bottle is given by V = 40(100 - 5z) cm3. How much oil will be left in the tank after 10 minutes? Give your answer in litres.
2 m
John used 3 rubber bands to form the sides of triangle ABC where AB = 8 cm, BC = x cm and AC = 2x cm. Bob stretches two of the elastic bands and enlarges triangle ABC. The sides BC and AC were stretched to 2 times its original length. What is the perimeter of the stretched triangle ABC?
2 m
Jeremy had n boxes of paper clips. There were 20 paper clips in each box. He lost 4 paper clips and shared the remaining paper clips with his 3 friends. How many paper clips did each of them receive?
2 m
Geria is p years old now. In 10 years' time, her auntie will be thrice as old as her. How old is Geria's auntie now?
2 m
Amy is r years old. Her mother is 4 times as old as her. What is their total age in 6 years
2 m
Anne is n years old now. 4 years ago, Anne was 2 times as old as Bernice. How old was Bernice 4 years ago?
2 m
Linda is k years old last year. Her brother is 3 years younger than her. What would their total age be in 7 years
2 m
12 years ago, Donald was 8c years old.
  1. How old was Donald 5c years ago?
  2. How old will Donald be 2c years later?
2 m
Jim is 29 years old. His mother is b years older than him and 3b years older than Keith. Find Keith's age in terms of b.
2 m