PLEASE ANSWER ALL OF THEM CORRECTLY AND EXPLAIN WHY ITS THE ANSWER!
At the zoo, the ratio of mammals to reptiles is 4:3. There are 20 mammals in the zoo.

(a) How many reptiles are in the zoo?

(b) If the zoo adds 12 more mammals to its collection, how many more reptiles will they have to add to keep the ratio the same?

(c) A zoo in a different city has a ratio of mammals to reptiles of 6:5. Which zoo has the larger ratio of mammals to reptiles?

Step-by-step explanation: 4 ratio is bigger than 3

$5

Step-by-step explanation:

Let the cost of one burger be $b while the cost of one small fries be s

2 burgers and 2 small fries cost $14

This means that;

2b + 2s = 14

divide both sides by 2

b + s = 7 •••••••• (i)

Three burgers and four small fries cost $23

Mathematically;

3b + 4s = 23 •••••••• (ii)

From i , we can see that s = 7- b

we can now substitute this into equation ii

3b + 4(7-b) = 23

3b + 28 -4b = 23

4b -3b = 28 -23

b = $5

one burger costs $5