What is the greatest common factor (gcf) of 40 and 36? a. 4 b. 360 c. 8 d. 2

Step-by-step explanation:

Factors of 40:

1, 2, 4, 5, 8, 10, 20, 40

Factors of 36:

1, 2, 3, 4, 6, 9, 12, 18, 36

Common factors:

1, 2, 4

Greatest common factor:

4

add 5 subtract 1

step-by-step explanation:

ruth is 6 years old

step-by-step explanation:

6 + 24 = 30,   so 6/30 = .2  

if you do 1/5 it also equals .2, so that is the answer.