Averages. It simple but hard to articulate to a 10 year old. Help.

Mathematics
Tutor: None Selected Time limit: 1 Day

A cricketer's average score for 6 innings is 12 runs. 

What must he score in his next innings to make his average 13?

Oct 1st, 2014

If his average score over 7 runs was going to stay at 12 - he would need to score 12 (obviously)

To bump the average up to 13 he would have to score an 'extra' for every run completed ie. 7 - so he would have to score an extra 7 runs. 

12 + 7 = 19 

answer: 19  

http://www.elevenplusexams.co.uk/forum/11plus/viewtopic.php?t=24944

Oct 1st, 2014

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