Select the correct answer from the drop-down menu. There are two numbers. One number is twice the other number. The difference of the smaller number and half the larger number is 20. An equation created to find the smaller number will have .

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Question:

Select the correct answer from the drop-down menu. There are two numbers. One number is twice the other number. The difference of the smaller number and half the larger number is 20. An equation created to find the smaller number will have .

Answer:

The required equation created to find the smaller number will be expressed as x – y/2 = 20 where x is the smaller number.

Let the two unknown numbers be x and y;

The smaller number is x

The larger number is y

If one number is twice the other number, hence;

y = 2x …………….. 1

Also, if the difference of the smaller number and half the larger number is 20, then:

x – y/2 = 20 ……………… 2

Substitute the equation 1 into 2 to have:

x – (2x/2) = 20

x – x = 20

Hence the required equation created to find the smaller number will be expressed as x – y/2 = 20 where x is the smaller number.

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