6.6.PS-11 Find the whole.,
155% of what number is 31?
155% of is 31.
(Type a whole number.)
plz help ASAP

20

Step-by-step explanation:

31 ÷ 155% =

31 ÷ (155 ÷ 100) =

(100 × 31) ÷ 155 =

3,100 ÷ 155 =

20

1.4

2.3

step-by-step explanation:

the formula for the constant of variation is

y= kx

divide each side by x

y/x =kx/x

y/x =k

we know a and y

1.   y/x = k

4/1 =4

check the other values to make sure they are the same

8/2 = 4   12/3 =4   and 16/4 =4  

the constant of variation is 4

2.   y/x = k

3/1 =3

check the other values to make sure they are the same

6/2 = 3   9/3 =3   and 12/4 =3  

the constant of variation is 3