In a bowl, the ratio of red jelly beans to yellow jelly beans is 4: 5. the ratio of yellow to blue jelly beans is 3: 7 if there were 35 blue jelly beans how many red jelly beans are there

12 red jelly beans

Explanation:

Given :

=

=

Notice :

x =

Hence

= x

=

or re-written in another way:

Red : Blue --> 12:35

If there were 35 blue jelly beans, then by observation of the ratio of Red:Blue, there will be 12 red jellybeans