The sum of two numbers is 16. If five times the first number is equal to three times the second number, find the numbers.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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The sum of two numbers is 16. If five times the first number is
equal to three times the second number, find the numbers.

 The sum of the reciprocals of two consecutive positive even
integers is 11/60. Find the two even integers.

The sum of digits of a two-digit number on a football player’s uniform
is 11. If the digits are reversed, the new number is seven more than
twice the original number. Find the number.
Hint:
If ? is the tens digit and ? is the one's digit of a number, then that
the number is equal to 10? + ?.
For example, 78 = 7 10 + 8

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