Question

9. The average score of a cricketer for 10 matches is 42, find the average for last four matches.

$34 \times \frac{1}{4}$
This is the answer how Ans in detail :​

Answer 1

 let the total score be

Total runs in 10 matches=38.9×10=389

let us calculate now

Total runs in first six matches=42×6=252

As per question

totalrunsinlast4matches=389−252=137

soaverageforlast4matches=137/4=34.25