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Question Detail
2 is what percent of 50
- 2%
- 4%
- 6%
- 8%
Answer: Option B
Explanation:
2/50 * 100 = 1/25 * 100 = 4 %
1. 2 is what percent of 50
- 2%
- 4%
- 6%
- 8%
Answer: Option B
Explanation:
2/50 * 100 = 1/25 * 100 = 4 %
2. Out of 450 students of a school, 325 play football, 175 play cricket and 50 neither play football nor cricket. How many students play both football and cricket ?
- 75
- 100
- 125
- 150
Answer: Option B
Explanation:
Students who play cricket, n(A) = 325
Students who play football, n(B) = 175
Total students who play either or both games,
\begin{aligned}
= n(A\cup B) = 450-50 = 400\\
\text{Required Number}, n(A \cap B) \\
= n(A)+n(B)-n(A\cup B) \\
= 325 + 175 - 400 = 100
\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. 10% of inhabitants of a village having died of cholera, a panic set in, during which 25% of the remaining inhabitants let the village. The population is then reduced to 4050. Find the original inhabitants
- 5500
- 6000
- 6500
- 7000
Answer: Option B
Explanation:
Let the total number is x,
then,
(100-25)% of (100 - 10)% x = 4050
=> 75% of 90% of x = 4050
=> 75/100 * 90/100 * x = 4050
=> x = (4050*50)/27 = 6000
5. If x% of y is 100 and y% of z is 200, then find the relation between x and z.
- z = x
- 2z = x
- z = 2x
- None of above
Answer: Option C
Explanation:
It is , y% of z = 2(x% of y)
=> yz/100 = 2xy/100
=> z = 2x
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