The number of stamps that Kaye and Alberto had were in the ratio of 5:3 respectively. After Kaye gave Alberto 10 of her stamps the ratio of the number Kaye had to the number Alberto had was 7:5. After the gift, Kaye had how many more stamps than Alberto?
a) 20
b) 30
c) 40
d) 60
e) 90
Also: Any quick method to solve this question?
OA: C
a) 20
b) 30
c) 40
d) 60
e) 90
Also: Any quick method to solve this question?
OA: C
=)
