It should be 9. I hope this helps. If it's not 9 then can u please give me a list of your answers to choose from.
C = total number of candy
.4(c) = 8 pieces of candy
Divide c by .4: c= 20
20-8=12
Ed has 12 pieces of candy at home
Answer:
23
Step-by-step explanation:
(36-5)-4x2
31-4x2
31-8
23
Answer:
9 large apartments in B
Step-by-step explanation:
Same ratio
Building A = 12 small : 6 large
= 2 : 1
Building B = 18 small : x large
= 2 : 1
18/x = 2/ 1
18 = 2x
9 = x
Large apartments in B = 9
Step-by-step explanation:
Let the number be (10 x + y)
Then, 10 x + y = 3 * (x + y) (given)
10 x + y = 3 x + 3 y
10 x - 3 x = 3 y - y
7x = 2 y
x = 2 y / 7 ( Eq. 1)
Also, 10 x + y + 45 = 10 y + x ( given)
10 x - x = 10 y - y - 45
9 x = 9 y - 45 ( Eq. 2)
Substituting the value of x from (Eq. 1) in (Eq. 2), we have:
9 * 2 y / 7 = 9 y - 45
(9 y ) - (18 y / 7) = 45
63 y - 18 y = 315
45 y = 315
y = 7
From (Eq. 1),
x = 2 * 7 / 7 = 2
So, the number is 10 x + y = (10 * 2) + 7 = (20 + 7) = 27
Sum of the digits = 2 + 7 = 9
9 * 3 = 27
Adding 45 to the number 27, we get 72. So, the digits get reversed.