Each student in class 6A votes for exactly one of five candidates for class monitor. Six students vote for Wendy. Using the chart, how many students are in the class?
Sarah has ten coins of denominations 2, 1, 0.5, 0.2 and 0.1 dollars, with at least one coin of every denomination. What is the smallest possible total value?
Brown eggs come in cartons of 12 and white eggs in cartons of 10. Henry buys the same positive number of eggs of each colour. What is the least total number of cartons he must buy?
Oliver handles 900 cups. For each cup washed without breaking he earns 0.5 dollars. For a broken cup he receives no washing pay and pays the owner 2 dollars. His net earnings are 360 dollars. How many cups did he break?
Adrian glues identical cubes into the letters F, M and O as shown, then paints every exposed surface blue. How many cubes have exactly four painted faces?
Miley scores only 5, 8 or 10 points when she hits a target. She scores 8 and 10 equally often, for a total of 81 points. Half of all her shots miss. How many shots does she take altogether?
Cubes A, B and C have sides 10 cm, 5 cm and 3 cm. The whole left face of B is glued to the right face of A, and the whole bottom face of C is glued to the top face of B, as shown. Find the resulting solid’s surface area.
Two years ago, Ali and his father’s ages summed to 32. Four years from now, the father will be three times Ali’s age. In how many years from now will he be twice Ali’s age?