Question

Марина задумала число, вычло из него сначала 16 , затем 32 а потом прибавила 94 и вычла 145. В результате получилось 144. Какое число она задумала?

Answer 1

Она задумала число 99

Answer 2

Она задумала число 99

Answer 3

Solution:

To find the number Marina had in mind, we can use the given information to solve for the unknown number.

Marina first subtracted 16, then 32, and then added 94, and finally subtracted 145 from the number she had in mind, resulting in 144.

Let's solve for the unknown number step by step:

1. Subtract 16 from the unknown number - Let's denote the unknown number as x. - The result after subtracting 16 from x is x - 16.

2. Subtract 32 from the result of step 1 - The result after subtracting 32 from x - 16 is (x - 16) - 32, which simplifies to x - 48.

3. Add 94 to the result of step 2 - The result after adding 94 to x - 48 is (x - 48) + 94, which simplifies to x + 46.

4. Subtract 145 from the result of step 3 - The result after subtracting 145 from x + 46 is (x + 46) - 145, which simplifies to x - 99.

Given that the result of these operations is 144, we can set up the equation:

x - 99 = 144

Adding 99 to both sides of the equation gives us:

x = 144 + 99 x = 243

Marina had the number 243 in mind.