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To pass an examination, 40% marks are essential. A obtain 10% marks less than the pass marks and B obtains 11.11% marks less than A. What ... What percent less than the sum of a's and b's marks should c obtain to pass the exam??

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let the total mark=100
passing mark=40
A's mark=40*(100-10)/100=36
B's mark=36*88.89/100=32
A+B=68
40=68*(100-41)/100 (approx)
0 to 41% any value is the answer
6 years agoHelpfull: Yes(0) No(1)

Book Other Question

A company employs 600 men and 400 women and average wage is Rs 22.55 per hour . If a woman earns 50 paisas less than a man . What are their wages per hour? A clock which gains 5 minutes every 12 hour, is set right at 5 a.m.What will be the real time, when the cock shows 5 p.m. on the following 5th day ?

a. 4:55 p.m.
b. 4:05 p.m.
c. 5:05 p.m.
d. 5:55 p.m.