Mike and Huia are planning to travel to England for a holiday. They plan to be in England for three months, and during that time take a three-week bus tour through France and Spain. This activity requires you to calculate the amount of money Mike and Huia will need to save for their trip and how long it will take them to save it.

Mike and Huia estimate that for each day they are in England, between them they will need on average NZ$250 (to the nearest $50) when they are not on the bus trip.
Huia earns $850 each week. Mike earns $790 each week. Huia is able to save two fifths of her income and Mike 35% of his income to put towards the trip.
The cost of the return air tickets is $2500 each.
The cost of travel insurance is $385 plus GST (15%) for the two of them.
The three-week bus trip costs 2000 Great Britain pounds per person.
Great Britain pounds are used as currency in England.
The Exchange rate is: 1 NZ Dollar = 0.5091 GB Pound