AQA · GCSE · Physics · Higher
Nuclear Station Operating Days
Nuclear power stations do not generate electricity every day of the year.
One nuclear power station generated electricity for 92% of a year.
one year = 365 days
Calculate the number of days during the year that the nuclear power station generated electricity.
Write your answer first. You can study the marking guidance whenever you need it.
Study the marking See what earns credit and compare it with a full-mark answer.
Marking points
- 1 Calculates 92% of 365.
- 2 Obtains 335.8 days, or an allowed whole-day value of 335 or 336.
Full-mark answer
days, so the station generated electricity for about 336 days.
Why this answer loses marks
I subtracted the percentage from the number of days.
The question asks for a percentage of the whole year, so convert the percentage to a multiplier and apply it to the total.