The radio of girls to boys in the junior high band is 5 to 7. at the beginning of the year, there were 72 students in the band. by the end of the year, the ratio of girls to boys was 3 to 4 . i f there ara now 48 boys in the band, how many girls joined the band during rhe school year?

"curse these trig-loving pirates! " devora mutters as she looks at the map. then, after thinking for a moment, she walks back to the entrance of the secret cave, measuring 48 meters along the way. after performing a calculation, devora walks back to the empty treasure, faces the entrance, and turns a certain number of degrees to her left before walking 89 meters to the treasure. supposing that the angle at the cave entrance is acute and that devora's calculations were correct, how many degrees did she turn?