Question

Число а збільшили на 30%, а потім отримане число зменшили на 25%. Порівняйте останнє число з числом а»

Answer 1

Число а збільшили на 30%

a+0.3a
потім отримане число зменшили на 25%
a+0.3a-0.25a
Порівняйте останнє число з числом а
a<1.05a

Answer 2

Calculation:

To compare the final number with the original number, let's assume the original number is a.

1. The original number a is increased by 30%. This means we add 30% of a to a. 2. The resulting number is then decreased by 25%. This means we subtract 25% of the resulting number from the resulting number.

Let's calculate step by step:

1. Increasing a by 30%: - a + 30% of a = a + 0.3a = a * (1 + 0.3) = a * 1.3

2. Decreasing the resulting number by 25%: - a * 1.3 - 25% of (a * 1.3) = a * 1.3 - 0.25(a * 1.3) = a * 1.3 * (1 - 0.25) = a * 1.3 * 0.75

Comparison:

Now, let's compare the final number with the original number a:

- Final number = a * 1.3 * 0.75

To compare the final number with a, we can calculate the ratio of the final number to a:

- Ratio = (Final number) / a = (a * 1.3 * 0.75) / a = 1.3 * 0.75

Since we are only comparing the final number with a, we don't need to know the exact value of a. We can simply compare the ratio 1.3 * 0.75 with 1.

If the ratio is greater than 1, it means the final number is larger than a. If the ratio is less than 1, it means the final number is smaller than a.

Conclusion:

To compare the final number with the original number a, we need to calculate the ratio 1.3 * 0.75 and compare it with 1.

Please note that the exact value of a is not provided, so we cannot determine the specific comparison result without knowing the value of a.