The average marks scored by Rhea in two of her English exam is 87. What marks must she score in the next exam to raise her average to 90?
a) 92
b) 90
c) 96
d) 93
Answer with steps
gauri2183:
option c is correct
means 96
Answers
Answered by
36
Let the required marks be x
According to the question
(x+2*87)÷3>90
=> x+174>270
=>x>270-174
=>x>96
The minimum marks required is 96
According to the question
(x+2*87)÷3>90
=> x+174>270
=>x>270-174
=>x>96
The minimum marks required is 96
wrong answer
its 93
Thanks for correcting me. I just figured out that the answer should be 93. In the question we were asked to find the marks which will raise the average to 90. In this case the answer will be 93. But if it is asked that the average should surpass 90 then it would be 96. Thank you for correcting me again. :-)
Sorry. the answer I gave earlier is the correct one. I am right.
The answer is 96.
yes
96 is the correct one
Yes buddy. It is correct. )
:-)
ok i m sorry
Answered by
103
Answer:
Option c is the correct option.
Step-by-step explanation:
Given,
Average marks scored by Rhea in two exams = 87
Therefore,
= > ( Sum of marks in two exams ) / 2 = 87
= > Sumo of marks in two exams = 87 x 2
= > Sum of marks in two exams = 174
Let she should score 'a' to raise her average to 90.
At next exams, her total number of exam will be 2 + 1, that is 3.
And sum of marks will be 174 + a
Given that the average at that time should be 90.
So,
= > ( 174 + a ) / 3 = 90
= > 174 + a = 3 x 90
= > 174 + a = 270
= > a = 270 - 174
= > a = 96
Therefore, she should score 96 marks in next exams, in order to raise her average marks to 90.
Nicely explained :)
yss
:-)
great job
:-)
✌✌Nice explanation ✌✌
:-)
Osm ✔✔✔
:-)
✌✌✌✌
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