Question

How many numbers should be added to 60 to make it 100?​

Answer 1

40 should be added to 60 to make it 100.

Solution

Let the number be 'x'.

now,  according to question

60 + x = 100

x = 100 - 60

x= 40

Answer 2

Given: A number-  60

To find: How many numbers should be added to 60 to make it 100

Let: The required number be $x$

Solution: According to the given question and assumption made,

$x$ needs to be added to 60 to make it 100.

i.e., $x + 60 = 100$

Solving the derived expression for $x$

⇒ $x = 100 - 60$

⇒  $x = 40$

Verification:

⇒ $40 + 60 = 100$

Hence, 40 should be added to 60 to make it 100.