Question

The number of dive boards at a smaller height in all the swimming pools is between 1 Tens and 3 Tens. The number for dive boards at a bigger height in all the swimming pools is between 7 Ones and 9 Ones. Which of the following options makes the total number of dive boards?

• A. 20 + 8 = 28
• B. 12 + 21 = 33
• C. 1 + 10 = 11
• D. 8 + 11 = 19

Answer 1

The correct option is A 20 + 8 = 28

Since the dive boards at a smaller height are between 1 Tens and 3 Tens, it will be 2 Tens, i.e., 20. And the dive boards at a bigger height are between 7 Ones and 9 Ones, therefore it will be 8 Ones, i.e., 8.
Therefore, the total number of dive boards = 20 + 8

Hence, Option C is correct.