A percentage we know that percent means per hundred (100). The percent is denoted by sign, “%”, or the abbreviation “pc” is also used to represent percentage .So a fraction with its denominator 100 is equal to that percent as is the numerator.
Thus 15/100 =15%
Results
#1. If y is 90% of x then what percentage of y is x ?
If y is 90% of x then what percentage of y is x ?
y * 90 / 100 = x
y=100x / 90
x=100 /90
y is 111.1 % of x
#2. 8% of 36 is 72% of what number ?
8% of 36 is 72% of what number ?
36 * 8/100= x * 72/100 (100/100 cancel)
36*8 =72x
x=36 * 8/72
x = 4
#3. What is the certain number if 18 is 15% and 30% ?
What is the certain number if 18 is 15% and 30% ?
x* 30/100*15/100 =18
9x/200*18
9x= 3600
x=3600/9
x=400
#4. If 15% of 40 is greater than 25% of a number by 2 ,then the number is ?
If 15% of 40 is greater than 25% of a number by 2 ,then the number is ?
40 * 15/100 = x * 25/100 =2
2*3=x/4=2
6-x/4=2
24 – x/4=2
24-x=2*4
24-X=8
-x=8-24
x=16
#5. Subtracting 40% of a number from the number, we get the result as 30. The number is?
Subtracting 40% of a number from the number, we get the result as 30. The number is?
x-(x*40/100)=30
x-(40x/100)=30
100x-40x=30
60x=3000
x=3000/60
x=50
#6. If a number is 20% more than 50 find the number?
If a number is 20% more than 50 find the number?
50* 20/100
20% 0f 50 more than 10
50 10=60
#7. Adding 24 in a number is equal to adding 20 percent to the same number find 120 percent of the number?
Adding 24 in a number is equal to adding 20 percent to the same number find 120 percent of the number?
(24/20)*120
144
#8. x% of y ,y% of x is equal to ?
x% of y ,y% of x is equal to ?
y *x/100 x*y/100
xy/100 xy/100
2xy/100
xy =20%
#9. find the number whose 8⅓ is 2 ?
find the number whose 8⅓ is 2 ?
25/3% *x =2
x = 25/300*2
x=4
#10. If 12 is 50 % of number Find out number is ?
If 12 is 50 % of number Find out number is ?
Let the number is =x
in question 50% of x =12
50/100*x=12
x=(12*100)/50
x= 1200/50
x=24
#11. If 20% less than Rs. 200 Find the value is ?
If 12 is 50 % of number Find out number is ?
20% of 200 is
(20/100) *200
40
there the 20% less than 200-40= 160 Rs.
#12. X obtained 350 marks out of 600, What percentage marks did get
X obtained 350 marks out of 600, What percentage marks did get
total marks = 600
x marks = 350
percentage = (350/600)*100
x = 58%
#13. Out of an income 20,000, spends Rs. 15000. What is percentage of income
Out of an income 20,000, spends Rs. 15000. What is percentage of income
total income =20,000 Rs.
spends = 15000 Rs.
20000-15000
saving=5000
percentage =(5000/15000)*100
=33.3 %
#14. Ram saves 30% of his income if he saves as 600 per month . find his monthly income?
Ram saves 30% of his income if he saves as 600 per month . find his monthly income?
Ram monthly income = x
monthly saving= 600 Rs.
30% of x =Rs. 600
(30/100)*x=600
x=60000/30
x= 2000
#15. Express the 120 number as the ratio ?
Express the 120 number as the ratio ?
120 / 100
= 6 : 5
#16. In examination 84% of the student passed and 40 failed how many appeared ?
In examination 84% of the student passed and 40 failed how many appeared ?
Total number of student x
Number of student failed = 40
Total number of student passed = 84%
84% of x = x – 40
( 84 / 100 ) x = x – 4000
84 x = 100 x – 4000
84 x – 100 x = – 4000
– 16 x = – 4000
x = 4000 / 16
x = 250
#17. Find 8 % of Rs 8472 ?
Find 8 % of Rs 8472 ?
(8 / 100 ) * 8472
= 677.76
#18. 5 is 25% of which number?
5 is 25% of which number?
The required number is x
so that 25% of x = 5
(25/100)x = 5
25x = 5 * 100
25x = 500
x =500/25
x = 20
#19. A= 30 marks out of 50 , B = 15 marks out of 20 . Find the percentage and which is greater ?
A= 30 marks out of 50 , B = 15 marks out of 20 . Find the percentage and which is greater ?
1) A
30 marks out of 50 is = (30/50)*100
60%
2) B
15 marks out of 20 is =(15/20)*100
75%
B is greater
A < B
#20. A has 20 web pages to write, He had completed 25% of his work. How many web pages were left?
A has 20 web pages to write, He had completed 25% of his work. How many web pages were left?
Total number of web page A had to write = 20
Number of A completed =25%of 20
=(25/100)*20
=5
20-5=15 web pages were left to write