Question

please help -
lisa had a collection of stamps from australia, france and japan. she had 124 stamps from australia. 30% of the stamps were from France. she had 12 fewer stamps from japan than australia.

a) what was the total number of stamps in Lisa's collection?

b) Lisa's aunt gave hers some stamps from France. Her total collection increased by 25%. what % of her collection was from france after that?

Answer 1

a. X stamps, Total.
124 stamps, Australia
0.3x stamps, France
0.3x-12 stamps, Japan

X = 124 + 0.3x + 0.3x-12
0.4x = 112
X = 280

b. 280 + n = 1.25*280 = 350
n = 70 Stamps from Lisa's aunt.

(0.3x+n)/350 = (84+70)/350 = 0.44 = 44%
from France.

Answer 2

I don understand