The distance between the Sun and Neptune is 4.5 billion kilometres. The speed of light is 3 × 105 km/s
Calculate the time, in seconds, it takes for light to travel from the Sun to Neptune. Give your answer in standard form.
Practise OCR GCSE Maths Standard Form with exam-style questions for Foundation and Higher tier. 93 questions, matched to the OCR GCSE Maths (J560) specification and written in the written papers style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.