Percentage - Mathematics Questions and Answers
(Q1) Mathematics » Percentage
A student multiplied a number by 6/7 instead of 7/6. What is the percentage error in the calculation?
36.11
26.53
13.27
18.06
(Q2) 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.
500
400
350
420
(Q3) Mathematics » Percentage
40%
50%
45%
55%