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emmainna [20.7K]
3 years ago
12

(Please provide an explanation as well if you can, I'm pretty confused on how you would find this out on any other problems)

Mathematics
1 answer:
Sedaia [141]3 years ago
6 0

Answer:

88%.

Step-by-step explanation:

Total scores = 85 * 50 = 4250.

Take the 20 marks the 2 students scored away gives us 4230,

To find the new mean we divide by 48:

4230 / 48

=  88%.

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We first find out time taken to travel for just 1 km

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