38 of the visitors who visited the zoo on Sunday were adults. There were 360 more children than adults. The ratio of the number of the boys to the number of girls was 2:7. How many more girls than boys were at the zoo?

170 more girls than boys

Step-by-step explanation:

Let A and C stand for the numbers of Adults (A) and Children (C).  Let B and G stand for the numbers of Boys(B) and Girls (G).

We learn that A = 38.

We also find that:

C = A + 360       [There were 360 more children than adults]

We can write that:  B + G = C  [the total children is the sum of B and G]

Then we are told that the ratio of the number of the boys to the number of girls was 2:7

B/G = 2/7 , or

2G = 7B

and we can write G = (7/2)B

We want to find (G-B)  [ How many more girls than boys were at the zoo?]

C = A + 360

C = 38 + 360

C = 398

B + G = C

B + G = 398

B + (7/2)B = 398

(7/2)B = 398

B = (398)*(2/7)

B = 113.7 or 114 [Round to nearest whole boy, out of courtesy]

G = 398 - 114 = 284

There are (284 - 114) = 170 more girls than boys at the zoo.

wholesale price is the initial price before markup. retail price comes after the markup.

a price of 8 bucks that's marked up by 100%   is

formula: initial price + (percent markup in fraction/decimal)(initial price)

8+(1)(8)

8+8

16

retail price is $16.

answer:

c. the third graph