Wednesday

July 30, 2014

July 30, 2014

Posted by **Rayyan** on Saturday, December 15, 2012 at 4:59pm.

- Algebra -
**Asi**, Saturday, December 15, 2012 at 6:13pmIt's a system of equations problem. Just represent the values with different expressions as they relate.

givens:

28 animals total

number of piranhas = 1 more than turtles

number of piranhas = 2 less than number of beta fish

let x = number of piranhas

piranhas = x

turtles = x - 1 (there's one less turtle)

number of beta fish = x + 2 (there are two more beta fish than piranhas)

now you can put all the expressions together and equate it to the total number of creatures in the tank.

x + x - 1 + x + 2 = 28

simplifies to 3x + 1 = 28

now solve for x

3x + 1 = 28

-1 -1

3x = 27

/3 /3

x = 9

now plug this value in the expression you used to represent the beta fish --

(x + 2)

x = 9 so 9 + 2 = 11

there are 11 beta fish in the aquarium

**Related Questions**

Math - Beatriz has 8 turtles.two fourths of them are. Box turtles.how many of ...

physics help 4 please!! - Two turtles (each 2 kg) sit on an approximately ...

reading - Some turtles live in the sea. Some turtles live in the land. Some ...

Statistics - 3.The lifespan of 300 Giant turtles is found to follow a Normal ...

reading - Some turtles live in the sea. Some turtles live in the land. Some ...

Math - While visiting their uncle's farm, Francine and Leah caught 68 turtles in...

Math - In a fish tank, there are two fewer blue fish than three times the number...

4th grade math - Endangered species Group number clams 62 birds 14 more than ...

Math - A researcher tagged 40 giant turtles in 2008. In 2009 , she returned and ...

Lang Arts - Select the letter that corresponds to the word or words that the ...