Question
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\( I \) am thinking of a number between 1 and 10 When \( I \) add 5 , then divide by 4 and multiply by \( 5, I \) get 10 . What is the number?

Ask by Martin Fernandez. in Canada
Jan 24,2025

Real Tutor Solution

Tutor-Verified Answer

Answer

The number is 3.

Solution

Let's solve the problem step by step. **Let’s denote the number you’re thinking of as** \( x \). According to your description: 1. **Add 5 to the number:** \[ x + 5 \] 2. **Divide the result by 4:** \[ \frac{x + 5}{4} \] 3. **Multiply the result by 5 to get 10:** \[ \frac{x + 5}{4} \times 5 = 10 \] Now, let's solve for \( x \): \[ \frac{x + 5}{4} \times 5 = 10 \] Simplify the left side: \[ \frac{(x + 5) \times 5}{4} = 10 \] Multiply both sides by 4 to eliminate the denominator: \[ (x + 5) \times 5 = 40 \] Divide both sides by 5: \[ x + 5 = 8 \] Subtract 5 from both sides to solve for \( x \): \[ x = 3 \] **Therefore, the number you’re thinking of is** \( \boxed{3} \).

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The Deep Dive

Let's break this down step by step! First, let's represent your unknown number as \( x \). According to your operations, we can write the equation based on your statements: \[ \left( \frac{x + 5}{4} \right) \times 5 = 10 \] Now we'll simplify the equation. Start by multiplying both sides by 4 to eliminate the fraction: \[ (x + 5) \times 5 = 40 \] Next, divide both sides by 5: \[ x + 5 = 8 \] Finally, subtract 5 from both sides to solve for \( x \): \[ x = 3 \] So, the number you are thinking of is \( 3 \)! Now let's review this with a bit of fun: You found a sneaky number! Like a magician pulling a rabbit out of a hat, you pulled 3 out from 1 to 10, and voilà – magic maths! If you ever find yourself confused with equations, just breakthrough step by step like peeling an onion. You’ll get to the core of the problem without shedding too many tears!

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