Question

i need some help here

Answer 1

@563blackghost

Answer 2

What plus 30 gives u 100 ? then divide it base on what u already know

Answer 3

"30% of the animals in the zoo are reptiles. If 126 animals are reptiles, how many animals are there in the zoo?"

\[\large{30\text{%}=\frac{30}{100}}\]which means that for every 100 animals, 30 of them are reptiles. We can get this in decimal form by division, \(30\div100=0.30\)
Which basically means \[\large{0.30x\text{ reptiles in }x\text{ animals}}\]

You're told that 126 animals are reptiles. That means:\[\large{0.30x=126}\]
We want to find \(x\) to know how many animals there are total...

Answer 4

So isolate the variable by division;\[\large{\therefore x=\frac{126}{0.30}}\]\[\large{=126\cdot\frac{100}{30}}\]\[\large{=\text{ ??}}\]

What answer did you get?