   Chapter 1, Problem 29AT ### Contemporary Mathematics for Busin...

8th Edition
Robert Brechner + 1 other
ISBN: 9781305585447

#### Solutions

Chapter
Section ### Contemporary Mathematics for Busin...

8th Edition
Robert Brechner + 1 other
ISBN: 9781305585447
Textbook Problem

# A flatbed railroad car weighs 150 tons empty and 420 tons loaded with 18 equal-weight trailers. How many tons does each trailer weigh?

To determine

To calculate: How many tons does each 18 equal-weight trailers weigh. If the flatbed railroad car weighs 150 tons empty and 420 tons loaded with trailers.

Explanation

Given Information:

The flatbed railroad car weighs 150 tons empty, the flatbed railroad car weighs 420 tons loaded with trailers and there are 18 equal-weight trailers.

Formula used:

Steps for dividing whole numbers:

Step 1: Pick up the first group of digits that the divisor will divide into the dividend at least once. Divide and then place the partial quotient in that group over the last digit.

Step 2: Multiply the divisor by partial quotient and then place it under the first group and then subtract.

Step 3: Now from the divided, write down the next digit after the first group of digits.

Step 4: Repeat all the steps in the same sequence until all the digits in the dividend are brought down.

Steps for subtracting whole number,

Step 1: Line up the place values by writing the whole numbers in column- units, tens, hundreds, thousands, and so on.

Step 2: Starting from the right with the units column, subtract the digits in each column.

Step 3: A digit must be borrowed from the column to the left of the working column, if the column cannot be subtracted.

Calculation:

Consider the provided data,

The flatbed railroad car weighs 150 tons empty and the flatbed railroad car weighs 420 tons loaded with trailers.

Total weight of all the trailers will be,

420    150             ¯

Consider the operation, and line up the place values:

420    150             ¯

Now, subtract the digits in each column starting from the right with the unit’s column:

420    150           0  ¯

As the column cannot be subtracted, a digit is borrowed from the column to the left of the working column:

3 12      420    150

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