1.
If 12% of x is equal to 6% of y, then 18% of x will be equal to how much per cent of y?
 A.7%
 C.11%
 B.9%
 D.None of these
 Answer & Explanation
 Report
Answer : [B]
Explanation :
Explanation :
We have, 12% of x = 6% of y  






2.
In a shipment of 120 machine parts, 5 per cent were defective. In a shipment of 80 machine parts, 10 per cent were defective. For the two shipments combined, what per cent of the machine parts were defective?
 A.6.5
 C.7.5
 B.7.0
 D.8.0
 Answer & Explanation
 Report
Answer & Explanation : [B]
Explanation :
Explanation :
14 out of 200 machine parts were defective, i.e., 7% 
3.
A number is increased by 20% and then decreased by 20%, the final value of the number.
 A.does not change
 C.increases by 4%
 B.decreases by 2%
 D.decreases by 4%
 Answer & Explanation
 Report
Answer : [D]
Explanation :
Explanation :
Here, x = 20 and y = 20  




Since the sign is negative, there is decrease in value by 4%.  
4.
? x 15 = 37.5% of 220
 A.5.5
 C.6.5
 B.7.5
 D.None of these
 Answer & Explanation
 Report
Answer : [A]
Explanation :
Explanation :
Let x x 15 = 37.5% of 220  




5.
Three papers where set in an examination and the maximum marks per paper were in the ratio of 1 : 2 : 2 respectively. If a student obtained 50% in the first paper, 60% in the second, and 65% in the third, what percent did he obtain overall?
 A.58.3%
 C.33.33%
 C.66.66%
 D.60%
 Answer & Explanation
 Report
Answer : [D]
Explanation :
Explanation :
Ratio of maximum marks = 1 : 2 : 2 

Ratio of marks obtained = (0.5 x 1) : (0.6 x 2) : (0.65 x 2) = 0.5 : 1.2 : 1.3  



