Anyone please send me some sums on chapter Percentage...
Answers
Answer:
Write each of the following as percentage.
(i) 7/25
(ii) 14/625
(iii) 5/8
(iv) 0.8
(v) 0.005
(vi) 3:25
(vii) 11: 80
(viii) 111: 125
(ix) 13: 75
(x) 15: 16
(xi) 0.18
(xii) 7/125
Solution:
(i) 7/25
To change any number to percentage we have to multiply that number by 100,
i.e., 7/25 × 100 = 28%
(ii) 14/625
To change any number to percentage we have to multiply that number by 100,
i.e., 14/625 × 100 = 56/25 = 2.24%
(iii) 5/8
To change any number to percentage we have to multiply that number by 100,
i.e., 5/8 × 100 = 125/2 = 62.5%
(iv) 0.8
To change any number to percentage we have to multiply that number by 100,
i.e., 0.8 can be written as 8/10
so, 8/10 × 100 = 80%
(v) 0.005
To change any number to percentage we have to multiply that number by 100,
i.e., 0.005 can be written as 5/1000
so, 5/1000 × 100 = 5/10 = 0.5%
(vi) 3:25
To change any number to percentage we have to multiply that number by 100,
i.e., 3/25 × 100 = 3 × 4 = 12%
(vii) 11 : 80
To change any number to percentage we have to multiply that number by 100,
i.e., 11/80 × 100 = 55/4 = 13.75%
(viii) 111 : 125
To change any number to percentage we have to multiply that number by 100,
i.e., 111/125 × 100 = 444/5 = 88.8%
(ix) 13 : 75
To change any number to percentage we have to multiply that number by 100,
i.e., 13/75 × 100 = 52/3 = 17.3%
(x) 15 : 16
To change any number to percentage we have to multiply that number by 100,
i.e., 15/16 × 100 = 375/4 = 93.75%
(xi) 0.18
To change any number to percentage we have to multiply that number by 100,
i.e., 0.18 can be written as 18/100
so, 18/100 × 100 = 18%
(xii) 7/125
To change any number to percentage we have to multiply that number by 100,
i.e., 7/125 × 100 = 28/5 = 5.6%