Klik has a camera that takes film that allows 24 exposures, whereas Snapp has a camara that takes film that allows 36 exposure. Both of them want to be able to take the same number of photographs and complete their rolls of film. How many rolls should each buy?

Meera has a housewarming party at her place. She knows that around 40 guests will turn up for the party. Calcualte the pieces of sweets she has to order so that the guests take home 4 pieces each. Also, she has 90 lamps available with her, and she wants to use them all by placing them equally on the 20 stairs leading to her house, how many more lamps does she need to buy?

105 goats, 140 donkeys and 175 cows have to be taken across a river. There is only one boat which will have to make many trips in order to do so. The lazy boatman has his own conditions for transporting them. He insists that he will take the same number of animals in every trip and they have to be of the same kind. He will naturally like to take the largest possible number each time. Can you tell how many animals went in each trip?