Source: /news/business-19816359
Intuition
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Assume that today is October 5, 2012. You have £10,000 Assume you will receive £10,000 when you graduate in 2015.
Present Value: 10,000 x 1/(1.05)
5
= 10,000 x 0.7835
We can check this figure using the present value tables
= 7,835
Table 4.3 Present Value Interest Factors
Robert Peston
“To put it in terms that we can all understand, if I expect to earn a pound from
my work tomorrow, that pound is much more likely to materialise than a pound that I might expect to earn in 2025 (if anyone will still employ me then). By extension, when First Group and Virgin made their bids to run the line that connects London with Manchester and Glasgow, it would have been reasonable to expect the Department for Transport to put a much greater weight on revenues the companies expect to generate in the first five to ten years than in the latter five years. However the Department seems to have understated the long-term risks when awarding the contract to First Group”