Ms. Jhulan Goswami scores 102 runs in the 18th innings of her career and thus increases her average by…
The correct choice is: “17” Let her average after 17 innings be x. Total after 17 innings = 17x; after the 18th, total = 17x + 102 and the new average is x + 5. So 17x + 102…
Choose your answer
Ms. Jhulan Goswami scores 102 runs in the 18th innings of her career and thus increases her average by 5. After the 18th innings, her average is:
Answer and explanation
Correct answer A
The correct choice is: “17”
Let her average after 17 innings be x. Total after 17 innings = 17x; after the 18th, total = 17x + 102 and the new average is x + 5.
So 17x + 102 = 18(x + 5) = 18x + 90, giving x = 12. The average after the 18th innings is 12 + 5 = 17.
Check: 17 × 12 = 204; 204 + 102 = 306; 306 ÷ 18 = 17.
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