Question

If 10,20,x and 40 are in a proportion,the valu of x will b

Answer 1

Answer:

Here,

10 : 20 :: x : 40

pro. of mean = pro. of ext.

. 20 × x = 10 × 40

x. =. 400/20

x = 20 Ans...

Answer 2

Answer:

Step-by-step explanation:

10:20. =x:40

=)10/20=x/40

=)20x =40×10

=)x=40×10/20

=)x=20