Question

12) Which of the following will result in 10, 20, 19,
and 40 being in proportion?
(a) Add one to 10 (b) Add one to 20
(c) Add one to 19. (d) Add one to 40.
19.1​

Answer 1

Answer:

c as if you cross multiply the result won't be equal by 19+1

Answer 2

Answer:

Step-by-step explanation:The answer here is 'Add one to 19'

See the first number is 10,the double of 10 is 20 i.e.10×2=20

The third number here is 19 when 1 is added to 19 it gives 20.

The fourth number becomes exactly double of 20 i.e.20×2=40 and yes it is in proportion.