Question

Rashida had 18 correct answers and 12 incorrect answers. What was Rashida’s score?







Each correct answer is worth 2 1/4 points, and each incorrect answer is worth -1/2 point.

Answer 1

Answer:

Number of correct answers= 18

Points given for each correct answer = 2 1/4 = 9/4

Number of incorrect answers = 12

Points for each incorrect answer= -1/2

Total number of answers = 18+12 = 30

Total marks of the exam = 30 * 9/4 = 67.5

On estimating a round figure for the total marks = 70

Difference in marks between the round figure of the total marks and total marks = 70-67.5 = 2.5

So, number of questions left by Rashida = 2

Points for each question left unattended =Points for each incorrect answer

So, total number of questions now is 30+2 = 32

Now, score of Rashida = 18 * 9/4 = 40.5

Hence, Rashida's marks was 40.5 upon 70.

$\dag{\boxed {\underline{\sf{\underline\orange{hope \: it \: helps \: u }}}}}\\\\\dag{\boxed {\underline{\sf{\underline\orange{Please \: mark \: as \: BRAINLIEST }}}}}$

Answer 2

Answer:

• Correct Answers = 18
• Incorrect Answers = 12
• Correct Answer worth = 2¼
• Incorrect Answer worth = - ½

$\underline{\bigstar\:\textsf{According to the given Question :}}$

$:\implies\sf Total\:Marks=Correct-Incorrect\\\\\\:\implies\sf Total\:Marks=\bigg\lgroup18 \times 2{}^{1}\!/{}_{4}\bigg\rgroup-\bigg\lgroup12 \times {}^{1}\!/{}_{2}\bigg\rgroup\\\\\\:\implies\sf Total\:Marks=\bigg\lgroup18 \times {}^{9}\!/{}_{4}\bigg\rgroup-6\\\\\\:\implies\sf Total\:Marks=\bigg\lgroup4.5 \times 9\bigg\rgroup - 6\\\\\\:\implies\sf Total\:Marks = 40.5 - 6\\\\\\:\implies\sf Total\:Marks = 34.5$

⠀

$\therefore\:\underline{\textsf{Hence, Rashida score was \textbf{34.5 marks}}}.$