SOLUTION: In the cafeteria, the ratio of the number of girls to boys is 6:7. When 117 girls enter the cafeteria, the new ratio of girls to boys became 7:6. How many pupils were in the cafe
Algebra ->
Percentage-and-ratio-word-problems
-> SOLUTION: In the cafeteria, the ratio of the number of girls to boys is 6:7. When 117 girls enter the cafeteria, the new ratio of girls to boys became 7:6. How many pupils were in the cafe
Log On
Question 559533: In the cafeteria, the ratio of the number of girls to boys is 6:7. When 117 girls enter the cafeteria, the new ratio of girls to boys became 7:6. How many pupils were in the cafeteria at first? Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = the original ratio of girls to boys
given:
(1)
(2)
---------------------
(1)
(1)
and
(2)
(2)
(2)
(2)
(2)
and
(1)
(1)
(1)
There were
pupils in the cafe at first
check answer:
(2)
(2)
(2)
(2)
(2)
OK
