Question

20:30::?72 .a)56 b)59 c)68 d) 61 please let me know full step​

Answer 1

Answer:

• 56 is ur ans...................!

Step-by-step explanation:

>> 4×5= 20

>> 5×6=30

>> 7×8=56

>> 9×8= 72

Answer 2

The missing term is 56. (Option a)

Given:

20:30::?:72

To find:

The missing term

Solution:

Let the required term be X.

We know that the proportion is as follows-

20:30::X:72

The first two terms in the proportion are 20 and 30.

20=4×5

30=5×6

Similarly, X and 72 are in proportion.

72=8×9

By following a similar pattern,

So, X=(8-1)×8

X=7×8

X=56

Therefore, the missing term is 56.

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