Question

$\huge\bold{Question}$


Suresh scored a certain average runs for 9 one day matches. When he scored 64 runs in 10th match, his average score increased by 2. How many total runs did he score in 10 matches?

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Answer 1

FORMULA USED

• Average run = Total Run/ No. of Days

SOLUTION

Let the avg. after 9 innings be x.

• x = Runs scored in 9 innings / 9
• Runs scored in 9 innings = 9x

NOW Given that,

• When he scored 64 runs in 10th match, his average score increased by 2.
• x + 2 = (9x+64)/10

Therefore

(9x + 64)/10 = x + 2

9x + 64 = 10x + 20

x = 44

Total runs he score in 10 matches

9x + 64

9*44 + 64

460 runs

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Answer 2

Step-by-step explanation:

FORMULA USED

Average run = Total Run/ No. of Days

SOLUTION

Let the avg. after 9 innings be x.

x = Runs scored in 9 innings / 9

Runs scored in 9 innings = 9x

NOW Given that,

When he scored 64 runs in 10th match, his average score increased by 2.

x + 2 = (9x+64)/10

Therefore

(9x + 64)/10 = x + 2

9x + 64 = 10x + 20

x = 44

Total runs he score in 10 matches

9x + 64

9*44 + 64

460 runs

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