in a test a student get +1/2 marks for every correct answers and -1/3 for every incorrect answer. sindhu attempt all questions and scored 16/9 marks. she answered 7 questions correctly.
1. how many question did she answer correctly?
2. How many questions were there in test?
3. What would her score have been, if she had answered one more question properly?
iromtejchandrap233gc:
bro your question is little confuse
question no 1 already giving your ans means she answered correctly 7 please ask the question be very nicely and clearly buddy
hope you understand
hope you understand
Answers
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1. Let the no of incorrect answer be x
Then 1/2*7 - 1x/3= 16/9
x/3 = 7/2 - 16/9 = 31/18
X = 5 ( approx)
2. Total no. Of questions 7+5 = 12
3. 8*1/2 - 4/3 = 4-4/3 = 8/3
Then 1/2*7 - 1x/3= 16/9
x/3 = 7/2 - 16/9 = 31/18
X = 5 ( approx)
2. Total no. Of questions 7+5 = 12
3. 8*1/2 - 4/3 = 4-4/3 = 8/3
now plzz mark me as brainliest
thanks bro
any more question in maths
Ya see my post
find the decimal conversion of 1/89 till 10 decimal places. check if the digits in the decimal number is in fibonacci series
ask this question as ur question
not here
I will answer there
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