Question

. Find a in each of the following proportion
a) a:85::57:95 b) a:6::55:11
c) 7:12 :: a:24 d) 30:40 :: 45 : a ​

Answer 1

Answer:

A ka answer hai 51

B ka 100.83

Answer 2

Answer:

a) 51

b) 30

c) 14

d) 60

Step-by-step explanation:

Note :

a : b :: c : d

=> a * d = b * c

a )

a : 85 :: 57 : 95

=> a * 95 = 85 * 57

=> a * 95 = 4845

=> a = 4845/95

=> a = 51

b )

a : 6 :: 55 : 11

=> a * 11 = 6 * 55

=> a * 11 = 330

=> a = 330/11

=> a = 30

c )

7 : 12 :: a : 24

=> 7 * 24 = 12 * a

=> 168 = 12 * a

=> 168/ 12 = a

=> a = 14

d )

30 : 40 :: 45 : a

=> 30 * a = 40 * 45

=> 30 * a = 1,800

=> a = 1800 / 30

=> a = 60