2. An inspector rejects 0.08% of the meters as defective, How many meters he examine to reject 2 meteres
1200
2400
1400
2500
Answer: Option D
Explanation:
It means that 0.08% of x = 2
\begin{aligned}
=> ( \frac{8}{100 \times 100} \times x) = 2 \\
=> x = \frac{2 \times 100 \times 100}{8} \\
=> x = 2500
\end{aligned}
3. 2.09 can be expressed in terms of percentage as
2.09%
20.9%
209%
0.209%
Answer: Option C
Explanation:
While calculation in terms of percentage we need to multiply by 100, so
2.09 * 100 = 209.
4. A batsman scored 120 runs which included 3 boundaries and 8 sixes. What percent of his total score did he make by running between the wickets.
40%
50%
60%
70%
Answer: Option B
Explanation:
Number of runs made by running = 110 - (3 x 4 + 8 x 6)
= 120 - (60)
= 60
Now, we need to calculate 60 is what percent of 120.
=> 60/120 * 100 = 50 %
5. Teacher took exam for English, average for the entire class was 80 marks. If we say that 10% of the students scored 95 marks and 20% scored 90 marks then calcualte average marks of the remaining students of the class.
60
70
75
80
Answer: Option C
Explanation:
Lets assume that total number of students in class is 100 and required average be x. Then from the given statement we can calculate : (10 * 95) + (20 * 90) + (70 * x) = (100 * 80)