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Simon has three numbers. The third number is four more than the first number, and the second number is five more than three times the third number. The sum of the three numbers is sixteen. What is the first number?

 Jun 27, 2020
 #1
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Let the first number be x. The third number is x+4. The second number 3(x+4)+5=3x+12+5=3x+17.

 

Add these ages together.

 

x+(x+4)+(3x+17)=16

5x+21=16

5x=-5

x=-1.

 Jun 27, 2020

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