Math Problem Statement

n is four times the three digit hundreds digit and one third of the drama digit. If the number exchanged between units and tens digits is 18 more than the previous digit, what is the value of n

Solution

Let's break down the problem step by step:

  1. Let the three-digit number be represented as 100h+10t+u100h + 10t + u, where hh is the hundreds digit, tt is the tens digit, and uu is the units digit.

  2. According to the problem, nn is four times the hundreds digit hh: n=4hn = 4h

  3. nn is also one-third of the "drama digit." Assuming that the "drama digit" is the same as uu (the units digit), we get: n=u3n = \frac{u}{3}

  4. The number formed by exchanging the tens and units digits is 100h+10u+t100h + 10u + t. This new number is 18 more than the original number, which gives the equation: 100h+10u+t=(100h+10t+u)+18100h + 10u + t = (100h + 10t + u) + 18

Step-by-step solution:

Step 1: Set up the equation from the exchange of digits.

Simplifying the above: 100h+10u+t=100h+10t+u+18100h + 10u + t = 100h + 10t + u + 18 Canceling out 100h100h on both sides: 10u+t=10t+u+1810u + t = 10t + u + 18 Simplifying further: 9u9t=189u - 9t = 18 ut=2u - t = 2 Thus, u=t+2u = t + 2.

Step 2: Combine with the condition for nn.

From the first two conditions: n=4handn=u3n = 4h \quad \text{and} \quad n = \frac{u}{3} Therefore: 4h=u34h = \frac{u}{3} Multiplying both sides by 3 to eliminate the fraction: 12h=u12h = u Since u=t+2u = t + 2, we also have: 12h=t+212h = t + 2

Step 3: Solve the system of equations.

Now we have two equations:

  1. u=t+2u = t + 2
  2. 12h=t+212h = t + 2

Let’s substitute t+2t + 2 for uu into n=u3n = \frac{u}{3}: n=t+23n = \frac{t + 2}{3} And since n=4hn = 4h, we equate this to get: 4h=t+234h = \frac{t + 2}{3} Multiplying through by 3: 12h=t+212h = t + 2 This matches the earlier equation, confirming that 12h=t+212h = t + 2.

Step 4: Find the value of nn.

At this point, we can test different values of hh to satisfy this condition:

  • If h=1h = 1, then 12(1)=t+212(1) = t + 2 gives t=10t = 10, which is not possible for a digit.
  • If h=2h = 2, then 12(2)=t+212(2) = t + 2 gives t=22t = 22, which is also not possible.
  • If h=0h = 0, then 12(0)=t+212(0) = t + 2 gives t=2t = -2, not possible.

Step 5: No real solution under reasonable assumptions.

It seems there's an inconsistency. Would you like to check further steps? Possible to check

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Algebra
Digit Manipulation
Equation Solving

Formulas

n = 4h
n = u / 3
100h + 10u + t = 100h + 10t + u + 18
u - t = 2
12h = t + 2

Theorems

Basic Algebraic Manipulation

Suitable Grade Level

Grades 9-12