Question

4.28 and -3.28 are two numbers on a real number line. If 1 is added to the numbers, then which of the following is true? A. Distance between the two new numbers is 2 more than distance between 4.28 and -3.28 B. Distance between the two new numbers is 2 less than distance between 4.28 and -3.28 C. Distance between the two new numbers is 2 equal distance between 4.28 and -3.28 D. None of these

Answer 1

We solve this practically as follows.

Lets have a number line beginning from -2 to + 2

the number of intervals is as follows.

-2 ↔ -1 ↔ 0 ↔ 1 ↔ 2

we have 4 intervals between -2 and + 2

Now lets add 1 to both numbers :

-2 + 1 = -1

2 + 1 = 3

Lets draw the number line again.

-1 ↔ 0 ↔ 1 ↔ 2 ↔ 3

The number of intervals is still 4 .

Conclusion :

when we add 1 to both numbers the interval remains the same as the previous interval.

The answer is therefore C