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. One fourth of one third of two fifth of a number is 15. What will be40% of that number
140
150
180
200
Answer: Option C
Explanation:
(1/4) * (1/3) * (2/5) * x = 15 then x = 15 * 30 = 450
40% of 450 = 180
4. Two numbers are less than third number by 30% and 37% respectively. How much percent is the second number less than by the first
8%
9%
10%
11%
Answer: Option C
Explanation:
Let the third number is x.
then first number = (100-30)% of x
= 70% of x = 7x/10
Second number is (63x/100)
Difference = 7x/10 - 63x/100 = 7x/10
So required percentage is, difference is what percent of first number
=> (7x/100 * 10/7x * 100 )% = 10%
5. What will be the fraction of 4%
1/20
1/50
1/75
1/25
Answer: Option D
Explanation:
4*1/100 = 1/25.
Friends I know it is quite simple, but trust me while solving percentage questions in Hurry we use to do these types of mistake only. So I recommend you to have a bit practise of this.