In the England-New Zealand one day match, due to rain, England needed 324 runs in 48 overs to win. In initial 10 overs, the average scoring rate was 6, but in next 10 overs it increased to 8.5. It then declined to 5.5 in next 10 overs and again rose to 7 in next 10 overs. To win the match now what average is needed?
- AOption (a)
8.25
- BOption (b)
6.75
- COption (c)
7.75
- DOption (d)
None of these
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Correct answer
6.75
Why this answer is correct
Given:
Total score required to win = 324 runs and Total overs = 48
Scoring rate in initial 10 overs = 6 runs/over
Scoring rate in next 10 overs = 8.5 runs/over
Scoring rate in next 10 overs = 5.5 runs/over
Scoring rate in next 10 overs = 7 runs/over
Formula used:
Average = Sum of observations/Number of observations
Calculation:
Total runs in 40 overs = 10 overs × 6 runs/over + 10 overs × 8.5 runs/over + 10 overs × 5.5 runs/over + 10 overs × 7 runs/over
⇒ 60 runs + 85 runs + 55 runs + 70 runs = 270 runs
Remaining runs = Total runs required to win - Runs scored in first 40 overs = 324 runs - 270 runs = 54 runs
Remaining overs = 48 overs - 40 overs = 8 overs
Required scoring rate = 54/8 = 6.75 runs/over
∴ The correct answer is 6.75.