1.75 because 42 divided by 4 is 10.5 and 10.5 divided by 6 is 1.75 i might be wrong but i tried
Divide 240 by 45 you would get 5 and 1/3, multiply 5 and one third by 60 and it would result in 320.
D. 320 would be the correct answer.
The answer is C because you can have a triangle with 5,9,n 5,10,n 9,10,n and 5,10,9
The reason why is because the sum of two sides is always larger than the value of the third side.
I hope that this helps.
Pretty sure the distributive property my friend