Jason, Kendra, and Amanda collect stamps.

Question

Jason, Kendra, and Amanda collect stamps. Jason has x stamps. Kendra has 12 stamps more than Jason. Amanda has three times as many stamps as Kendra. Altogether, they have 123 stamps. Set up an equation that represents this situation and then solve for x.

Answer 1

Jason has x stamps

 

Kendra has 12 stamps more than Jason = x+12

 

Amanda has three times as many stamps as Kendra = 3(x+12)= 3x+36

 

Altogether, they have 123 stamps

 

x + x+12 +3x +36 =123

 

5x +48 = 123

 

5x = 75

 

x = 15