InfyTQ Percentage Quiz 4

Let the % be X
Since we know 1km= 1,000 meters
Therefore 8.9 km= 8.9*1000= 8900 Meters
Hence 2800 = X/100*8900
X= 2800/89= 31.46%

Let the Number be X
The number obtained after the above calculation= 80/100(110/100*X)
= 80/100*110/100*X= 88/100X
Now as per the question
X-88/100X = 144
(100-88)/100X= 144
12X= 144*100= 14400/12= 1200
Hence the original number = 1200

Therefore option A is the correct one.

8/5*100%= 800/5= 160%
Hence option B is the correct one.

Total strength= 175
Full attendance = 110

Therefore students who did not have full attendance= 175-110= 175-110= 65
students
Hence % of students who did not get full attendance= 65/175*100= 37.14%

Initial strength= 50,000
After 1 year= 50000*10/100= 5000 (50000+5000= 55000)
2’nd yr. it increased by 14% = 55000*14/100= 7700 (55000+7700= 62700)
3’rd increased by 8%= 62700*10/100= 6270= (62700+6270= 66970)
But in the 4’th yr. it came down by 10%= 66970*10/100= 6697 (66970-6697=
60273
Hence current strength of students in the college= 60273

Price that Sam paid for the car= Rs 1,00,000
Amount saved= Rs 15,000

Now we can say that the Marked price of the car might have been =
1,00,000+25,000= 1,25,000
Now let the % of saving be X=
15,000=X% of marked price= 25,000= 1,25,000X/100= 20%
Hence the correct option is A

Out of 1200 boys 45% cleared = 1200*45/100= 540 boys passed
Remaining 660 boys failed
Out of 1500 girls 65% cleared = 1500*65/100= 975 girls passed
Remaining 525 girls failed

Total no. of students who failed= 660+525= 1185
Total no. of students who appeared the exam = 1200+1500= 2700
Therefore fail %= 1185/2700*100= 43.88%
Hence option C is the correct one.

1 kg= 1000 grams
Therefore 8 kg= 8000 grams
% of 640 grams in 8 kg or 8000 grams = 640/8000*100 = 8%
Hence option A is the correct one.

4/3*100= 400/3= 133.33%
Hence option D is the correct one.