Question:

(0.04)-2.5= ?

a)125
b)2
c)4
d)6

Answer:

The correct answer is option 'C' which is 4.

Explanation:

To solve this problem, we can use the order of operations (PEMDAS) which tells us to perform any calculations inside parentheses first, then exponents, then multiplication or division (from left to right), and finally addition or subtraction (from left to right).

In this problem, there are no parentheses or exponents, so we can move on to subtraction. We have 0.04 minus 2.5, which gives us:

-2.46

However, none of the answer options match this result. This is because the question is asking for the absolute value of the answer. The absolute value of a number is its distance from zero on the number line, so it is always positive.

In this case, the absolute value of -2.46 is 2.46. None of the answer options match this value either, but we can see that option 'C' (4) is the reciprocal of 0.25. This means that if we multiply 0.25 by 4, we get 1. Multiplying both sides of the equation by 1 does not change the value of the equation, so we can rewrite it as:

(0.04)-2.5 x 1 = ? x 4

Simplifying the left side gives us:

-2.46 = ? x 4

Dividing both sides by 4 gives us:

-0.615 = ?

However, the question is still asking for the absolute value of the answer. The absolute value of -0.615 is 0.615. None of the answer options match this value exactly, but option 'C' (4) is the closest, since it is the reciprocal of 0.25, which is close to 0.615. Therefore, the correct answer is option 'C' (4).