It is true. A ratio compares to two fractions
Answer:
weight of 25 students
25 × 58 = 1450kg
weight of 29 students
29 × 62 = 1798kg
total students = 25 + 29 = 54
total weight of students = 1450 + 1798 = 3248
mean weight of all students = 3248/54 = 60.19kg
11.6 is the correct answer.
Answer:
1.5 hours
Step-by-step
If it takes him 45 minutes to do 12 questions it would take him double the time to do 24
