1) Nine milk bottles contain 4.5 litres of milk between them.How much do five bottles hold?
2) A shopkeeper can buy 36 toys for $20.52. What will he pay for 120 toys?
3) Three men can build a wall in 10 hours. How many men would be needed to build the wall in 7.5 hours?
4) Find the cost of 20 grams of lead at $60 per kg.
5) The height of an office building is 623 feet. Express this height to the nearest metre using 1 m = 3.281 feet