Question

It would be greatly appreciated if someone could give and explanation and solution to this problem on the left,I've been stuck on it for a while. Thanks :)

Answer 1

Answer:

C) 19. Please mark me as brainliest.

Step-by-step explanation:

This question is a trick question. But since Mrs Brown measured heights of all 25 students, there are 25 students in the class, out of which all have been recorded on both tables.

Now since in Matthew's table, there is no mention of 171-174 cm heights (although it accounts for all children), it is apparent that in Lin's table 165-174 represents 165-170.

In 166-170 (Matthew), there are 4 children, while in 165-170 (Lin) there are 5 children. So, there is exactly 1 child who is 165 cm.

Now, we know that there are 18 children in 155-164 cm (Lin), and only 1 child is 165 cm, so there are 18 + 1 = 19 children in 155 - 165 mark, which is required.

Hope it helps! :)