Question

The number of seahorses is 4 times the number of sea urchins.There are 16 seahorses write and solve and equation to find how many seahorses are there.

Answer 1

Answer:

$4\ sea\ urchins$

Step-by-step explanation:

The correct question is

The number of seahorses is 4 times the number of sea urchins.There are 16 seahorses write and solve and equation to find how many sea urchins are there.

Let

x ----> the number of seahorses

y ----> the number of sea urchins

we know that

The number of seahorses is 4 times the number of sea urchins

so

$x=4y$ -----> equation A

There are 16 seahorses

so

$x=16$ ----> equation B

Solve the system by substitution

substitute equation B in equation A

$16=4y$

solve for y

divide by 4 both sides

$y=16/4\\y=4\ sea\ urchins$

Answer 2

Answer:

4.

Step-by-step explanation:

if 4 is the number of Urchins 4*4 is 16 which is how many seahorses there are.