Answer:
Ratio of times taken by Dan and David is 7 : 12
Solution:
Given that,
Dan and David are marking exam papers
Each set takes Dan 35 minutes and David 1 hour
Dan = 35 minutes
David = 1 hour = 60 minutes
Express the times Dan and David take as a ratio
Dan : David = 35 : 60
Reduce, by dividing ratio by 5
Dan : David = 7 : 12
Thus the ratio of times taken by Dan and David is 7 : 1
