Multiple choice

During the mid-semester exams, Navdeep scored 70% marks in English out of 240. She wants to increase her overall average to 80%. How much marks should she score in Mathematics out of 180?

  1. 90%

  2. 93.33%

  3. 94.33%

  4. 95.33%
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Total marks for 240 + 180 = 420. Target average 80% means total marks = 0.8 * 420 = 336. Marks in English = 0.7 * 240 = 168. Marks needed in Math = 336 - 168 = 168. Percentage in Math = (168 / 180) * 100 = 93.33%.

AI explanation

To achieve an overall average of 80 percent across both subjects, the required total marks equal 80 percent of the combined maximum marks, which is 240 plus 180, giving a total of 420. Navdeep needs a total of 0.8 times 420, which equals 336 marks, and she already scored 0.7 times 240, which is 168 marks in English. She must score 336 minus 168, equaling 168 marks in Mathematics out of 180, so the required percentage is (168 / 180) multiplied by 100, which is 93.33 percent.

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