14. In a test (+5) marks are given for every correct answer and (-2) marks are given for
every incorrect answer. Rohan answered all questions and scored 24 marks though he
got 8 correct answers. How many questions has he attempted incorrectly?
15. The temperature at 12 noon was 10°C above zero degrees. If it decreases at the rate of
2°C per hour until midnight, at what time would the temperature be 8°C below zero?
What would be the temperature at midnight?
Answers
Answer:
Given : In a test (+5) marks are given for every correct answer and (-2) marks are given for every incorrect answer.
i) rohan answered all question and scored (-15) marks though he got 8 correct answer.
ii) smitha answered all question and scored (-15) marks though he got 3 correct ansewer
To find : how many incorrect answer had they attempted.
Solution:
Rohan answered 8 answers correct
Mark for correct answers = 8 * 5 = 40
Total Mark = - 15
Marks for incorrect answers = 40 - (-15) = 55
Question incorrect answers attempted = 55/2 = 27.5
Smita answered 3 answers correct
Mark for correct answers = 3 * 5 = 15
Total Mark = - 15
Marks for incorrect answers = 15 - (-15) = 30
Question incorrect answers attempted = 30/2 =15
Plz give me brainliest if u want
this took a lot of time to write
Have a nice day :)
Answer:
all' over with thin leaves fo fine gold for eyes he had