Question

in the town zoo, 3/28 of the animals are birds. of the birds, 4/15 are birds of prey. what fraction of the animals at the zoo are birds of prey?

Answer 1

for this you have to multiply the two numbers :


`(3)/(28)` are birds and out of those
`(4)/(15)` are there relevant birds.
Explanation why you have to multiply:
in a similar situation, if you have a number and you want to find out 3/4 of this number: you multiply the original number by 3/4. Here it's just confusing that both numbers are fractions.




`(3)/(28) * (4)/(15)= (3*4)/(28*15) = (3*1)/(7*15)= (1*1)/(7*5)= (1)/(35)`

so the result is


`(1)/(35)`