Answer:
What do you need help with?
Step-by-step explanation:
Technically only 1...
If you have to use 4 rows there is only one option;
1 1 1 2
1 1 2 1
1 2 1 1
2 1 1 1
Each number represents the total kids in a row.
1st number is row 1 second number is row 2 etc.
If you can use 2 or 3 rows there are some more answers.
15 = rate * 40
rate = 15/40
rate = 0.375 * 100% = 37.5%
If you were to add the two numbers you would get 2 1/2 so the answer would be 2 1/2 hours altogether.
Convert 3/4 to a denominator of 8 by multiplying by two, getting you:
6/8 + 1/8
Add those and you get D) 7/8
