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elena55 [62]
3 years ago
8

3/28 of the animals are birds. 4/15 are birds of prey. What fraction of the animals are birds of prey.

Mathematics
1 answer:
vova2212 [387]3 years ago
7 0
Let's call animals "a", and birds "b", birds of prey, "p"

so, b=\frac{3}{28} a

and p=\frac{4}{15} b
what;s the relation of p to a?

we substitude b into the last one:

and p=\frac{4}{15}* \frac{3}{28} a
so:
p=\frac{4*3}{15*28} a

p=\frac{4*1}{5*28} a


p=\frac{1*1}{5*7} a

p=\frac{1*1}{35} a

which is the answer!









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