Paula finished a cross country race in 20 minutes. When Paula finished, Sonia had only completed 5/8 of the total race. Sonia's average speed was 75 metres per minute less than Paula's. Find the length of the race and Sonia's speed in metres per minute.
Please help... don't understand how to work it out

1

Jawapan

2016-06-05T14:01:30+08:00