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Adam and Hunter each had a collection of seashells. The ratio of Adam's seashells to Hunter's seashells was 2:1. When Hunter found 15 more seashells, the ratio became 1:2. How many seashells did Adam have?

 Jun 24, 2022
 #1
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Let  Hunter's seashells be H

Then Adam has 2H

 

When  Hunter finds  15 more we have that he now has twice as many as Adam....so....

 

H + 15  =  2 ( 2H)    simplify

 

H + 15  = 4H

 

15 = 4H  -H

 

15 = 3H

 

15 / 3 =  H =  5

 

Adam had  2H =   2 (5)  =  10 shells

 

 

cool cool cool 

 Jun 24, 2022

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