Question

Instructions:Select the correct answer.

Jonathan collects postcards and stamps. The number of postcards in his collection is 12 more than 3/4 the number of stamps. He has 39 postcards in all. If Jonathan has x stamps, which equation represents this situation and how many stamps does he have?
A.) The equation is 3/4X +12 =39, and the number of stamps is 36.
B.) The equation is 3/4X +X =39, and the number of stamps is 24.
C.) The equation is X+3/4 +X =39, and the number of stamps is 18.
D.) The equation is 3/4X =39 + X, and the number of stamps is 156.

Answer 1

The correct answer is A here is the math
12+ (3/4x) = 393/4x = 39 -12(4/3)(3/4) = 27 (4/3)x = 36

Answer 2

Answer: The things that we know in this problem are:

"the number of postcards is 12 more than 3/4 of the number of stamps"

This means that if P is the number of postcards, and S the number of stamps, then:

P - (3/4)S = 12

And we also know that P = 39

39 - (3/4)S = 12

(3/4)S =39 - 12 = 27

S = (4/3)*27 = 36

So he has 36 stamps.

then the correct answer is A.