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Maths at work 2 – Carting water

Answers

1. Volume of the tank on the back of the truck.
   Volume = length × width × height
                = 1.9 × 1.5 × 1.4
                = 3.99 m³
   
   
2. Water capacity of the tank on the truck
   Capacity = 3.99 × 100
                  = 3990 L
   
   
3. Loads of water required to fill the tank on the dry block
   Number of loads = 10 000 ÷ 3990
                              = 2.5
   
   
4. Estimated daily water requirement of the herd.
   Estimated water requirement = 80 × 50L/head
                                               = 4000L per day
   
   
5. After the large tank is filled, water will need to be carted to the dry block once every second day, but topping the tank with one load daily (3990L) will keep the large tank more than half full. It will also provide enough water for one and a half extra days in case something happens to prevent water being carted. For example, the truck could break down or all staff may be urgently needed in other aspects of the enterprise.

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