Answer:
51 correct : 9 incorrect = 17 correct / 9 incorrect
35 girls : 15 boys = 7 girls / 3 boys
Step-by-step explanation:
51 correct : 9 incorrect,
= 51 : 9
= 51 / 9
= 3 x 17 / 3 x 3
= 17 / 3
= 17 correct / 9 incorrect
35 girls : 15 boys
= 35 : 15
= 35 / 15
= 5 x 7 / 5 x 3
= 7 / 3
= 7 girls / 3 boys
