If pink snapdragons of the f1 hybrids (rw) are crossed with red snapdragons of the parent plant (rr), what will be the ratio of flowers produced in 40 offspring?
a.) 30 pink flowers, 10 red flowers
b.) 20 pink flowers, 20 red flowers
c.) 10 pink flowers, 30 white flowers

I think the correct answer from the choices listed above is option B. If pink snapdragons of the F1 hybrids (RW) are crossed with red snapdragons of the parent plant (RR), the ratio of flowers produced in 40 offspring would be 20 pink flowers, 20 red flowers. This can be proved in by making a Punnett Square. 

Yes yes yes very good