If school A has a boys and b girls, and school B has c boys and d girls, then
a/c = 2/1
b/d = 4/5
a+b = c+d
we want to find a/b
a = 2c
5b = 4d
a-c = d-b
a-(a/2) = (5b/4)-b
a/2 = b/4
a/b = 2/4 = 1/2
Two different schools (A and B) have the same number of pupils. The ratio of the boys in school A and the boys in school B is 2:1 and the ratio of the girls in school A and the girls in school B is 4:5. Find the ratio of the boys in school A to the girls in school A.
3 answers
1/2
Rossi is planning a date with his gilfriend.He plans for them to watch a movie,go out to dinner,and then attend a sporting event. He is dwciding between 555 movies, 888 restaurants,and 222 sporting events.
1 answer