26 would be the correct answer because 2/3 X 40 = 26.667 but you cant serve a little bit of soup so the total would be 26 Hoped this helped
t = mr^2/3
Divide both sides by r^2/3
m = t / r^2/3
It would be the last one because 5 columns are shaded and there are 10 columns all together. 50/100= 0.5
The lease common denominator using prime factorization would be 2. 2 is the number they can both be divided by and is also a prime number