Leaving Cert Mathematics Financial Maths: John compiled a table showing th

Question

John compiled a table showing the amount of water used in his own household over the course of a week. He recorded the number of litres required for each activity and the number of times each activity was undertaken. The data are shown in the table below.

| Activity                            | Water Required per activity | Frequency       | Number of litres used |
|-------------------------------------|-----------------------------|------------------|-----------------------|
| One Bath                            | 80 litres                   | 3 baths          | 240                   |
| One Shower                          | 125 litres                  | 20 showers       | 2500                  |
| Brushing Teeth with Tap Running     | 6 litres per minute         | 32 minutes       | 192                   |
| One WC Flush                        | 6 litres                    | 60 flushes       | 360                   |
| One Use of Washing Machine          | 45 litres                   | 8 uses           | 360                   |
| One Use of Dishwasher               | 20 litres                   | 7 uses           | 140                   |
| Washing One Car with a Bucket       | 10 litres                   | 1 wash           | 10                    |
| Hosepipe                            | 9 litres per minute         | 15 minutes       | 135                   |

Total number of litres used

(i) Complete the table to show the number of litres used for the various activities and the total number of litres used in the week.

(ii) If water were charged at £1.85 per 1000 litres, find what John’s household would pay for the water used in one year if the household uses the same amount of water each week.

(iii) Find John’s total bill for this water if VAT were to be included at a rate of 13.5%.

(d) John would like to reduce his water bill to £260 per year. If water were charged at £1.85 plus VAT at 13.5% per 1000 litres, find the number of litres of water he could purchase for £260.

John compiled a table showing the amount of water used in his own household over the course of a week - Leaving Cert Mathematics - Question c - 2016

Worked Solution & Example Answer:John compiled a table showing the amount of water used in his own household over the course of a week - Leaving Cert Mathematics - Question c - 2016

Complete the table to show the number of litres used for the various activities and the total number of litres used in the week.

If water were charged at £1.85 per 1000 litres, find what John’s household would pay for the water used in one year if the household uses the same amount of water each week.

Find John’s total bill for this water if VAT were to be included at a rate of 13.5%.

If water were charged at £1.85 plus VAT at 13.5% per 1000 litres, find the number of litres of water he could purchase for £260.

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