SOLUTION: The ratio of domestic stamps to foreign stamps in John�s stamp collection is 3:1. If John sold thirty of his domestic stamps, the ratio of domestic stamps to foreign stamps would b

Question 203409: The ratio of domestic stamps to foreign stamps in John�s stamp collection is 3:1. If John sold thirty of his domestic stamps, the ratio of domestic stamps to foreign stamps would be 1:2. How many foreign stamps does John have in his collection?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
The ratio of domestic stamps to foreign stamps in John�s stamp collection is 3:1.
If John sold thirty of his domestic stamps, the ratio of domestic stamps to foreign stamps would be 1:2.
How many foreign stamps does John have in his collection?
:
"The ratio of domestic stamps to foreign stamps in John�s stamp collection is 3:1."
=
d = 3f
:
"If John sold thirty of his domestic stamps, the ratio of domestic stamps to foreign stamps would be 1:2."
:
=
f = 2(d-30)
f = 2d - 60
replace d with 3f
f = 2(3f) - 60
f = 6f - 60
60 = 6f - f
60 = 5f
f =
f = 12 foreign stamps
;
:
Check solution
d = 3(12
d = 36 domestic stamps
:
Check in statement:
" John sold thirty of his domestic stamps, the ratio of domestic stamps to foreign stamps would be 1:2."
36 - 30 = 6 stamps
6/12 = 1/2

RELATED QUESTIONS
Malik collects rare stamps and has a total of 212 stamps. He has 34 more domestic stamps... (answered by josgarithmetic)

The function s(m) = 5 + 4(m � 1) represents the number of stamps in Rudy�s stamp... (answered by ewatrrr)

A collection of stamps consist of 3� stamps, 7� stamps, and 12 � stamps. The number of 3... (answered by stanbon,josmiceli,ikleyn,MathTherapy)

At first, Ali had 1 3/4 times as many stamps as John had and 1 4/5 times as many stamps... (answered by josgarithmetic,greenestamps,54929)

A stamp collector has 4 cent, 3 cent and 2 cent stamps. If he has 3 more 3 cent stamps... (answered by stanbon)

A stamp collection consist of 3, 8 and 15 cent stamps. The number of 8 cent stamps is one (answered by oscargut,kdr,Electrified_Levi)

A stamp collection consists of 3, 8, and 15 cent stamps. The number of 8 cent stamps is... (answered by solver91311)

A stamp collection consists of 3, 8, and 15 cent stamps. The number of 8 cent stamps is... (answered by ankor@dixie-net.com)

a stamp collection consists of 3, 8, 15, cent stamps. the number of 8 stamps is one less (answered by ankor@dixie-net.com)