Percentage - Mathematics Questions and Answers
Mathematics » Percentage
A student multiplied a number by 6/7 instead of 7/6. What is the percentage error in the calculation?
A
36.11
B
26.53
C
13.27
D
18.06
Mathematics » Percentage
Some students (only boys and girls) from different schools appeared for an Olympiad exam. 20% of the boys and 15% of the girls failed the exam. The number of boys who passed the exam was 70 more than that of the girls who passed the exam'. A total of 90 students failed. Find the number of students that appeared for the exam.
A
500
B
400
C
350
D
420
Mathematics » Percentage
A
40%
B
50%
C
45%
D
55%