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Primary 6 Problem Sums/Word Problems - Try FREE
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The distance between China and Singapore is 2520 km.
Mary flew a plane from China to Singapore at 0900.
At first, she travelled at a speed of 400 km/h for the first 4 hours of the journey.
After that, she increased her speed by 60 km/h for the rest of the journey.
(a) What was her average speed for the whole journey?
(b) What time did she reach Singapore?
Notes to student:
- If the question above has parts, (e.g. (a) and (b)), given that the answer for part (a) is 10 and the answer for part (b) is 12, give your answer as:10,12