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3 years ago

The second of two numbers is 4 times the first. Their sum is 45.

Mathematics

1 answer:

DedPeter [7]3 years ago

5 0

<h3><u>Question:</u></h3>

The second of two numbers is 4 times the first. Their sum is 45. Find the numbers

<h3><u>Answer:</u></h3>

The two numbers are 9 and 36

<h3><u>Solution:</u></h3>

Let the two numbers be "x" and "y"

Let "x" be the first number and "y" be the second number

<em><u>Given that the sum of numbers is 45</u></em>

x + y = 45 ------- eqn 1

<em><u>Also, given that, second of two numbers is 4 times the first</u></em>

second number = 4 times the first

y = 4x ------- eqn 2

<em><u>Substitute eqn 2 in eqn 1</u></em>

x + 4x = 45

5x = 45

<em><u>Substitute x = 9 in eqn 2</u></em>

y = 4(9)

Thus the two numbers are 9 and 36

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