1.
33 1/3% OF 240?
Answer: Option 'C'
33 1/3 % = 1/3
1/3 × 240 = 80
2.
11 1/9 % of 900?
Answer: Option 'A'
11 1/9 % = 1/9
1/9 × 900 = 100
3.
Express 2/5 as rate percent:
Answer: Option 'C'
2/5 × 100 % = 200/5 % = 40 %
4.
Express 3/4 as rate percent.
Answer: Option 'C'
3/4 × 100 = 300/4 % = 75 %
5.
What percent is 70 of 280?
Answer: Option 'A'
70/280 = 1/4
1/4 × 100 = 25 %
6.
What percent is 120 of 90?
Answer: Option 'C'
120/90 = 4/3
4/3 × 100 = 400/3 = 133 1/3 %
7.
What percent is 5 gm of 1 kg?
Answer: Option 'B'
1 kg = 1000 gm
5/1000 × 100 = 500/1000
=1/2 = 0.5 %
8.
What percent is 36paisa's of 12 rupees?
Answer: Option 'A'
12 Rupees = 1200paisa's
36/1200 × 100 = 3/12
12/3 = 3 %
9.
A number increased by 20% gives 480. The number is
Answer: Option 'C'
Formula = TOTAL=100% ,INCRESE = "+" DECREASE= "-"
A number means = 100 %
That same number increased by 20 % = 120 %
120 % -------> 480 (120 × 4 = 480)
100 % -------> 400 (100 × 4 = 400)
10.
Two students appeared at an examination. One of them secured 9 marks more than the other and his marks was 56% of the sum of their marks. What are the marks obtained by them?
Answer: Option 'A'
Let the marks secured by them be x and (x + 9)
Then sum of their marks = x + (x + 9) = 2x + 9
Given that (x + 9) was 56% of the sum of their marks
=>(x+9) = 56/100(2x+9)
=>(x+9) = 14/25(2x+9)
=> 25x + 225 = 28x + 126
=> 3x = 99
=> x = 33
Then (x + 9) = 33 + 9 = 42
Hence their marks are 33 and 42